How to Find Sources for a Research Paper
Updated November 6, 2026
To find sources for a research paper, turn your topic into keywords and search your library’s databases and Google Scholar. Then follow the citations in the best sources you find. Save each one as you go, and read it before you cite it.
The seven steps below work for almost any class. You can get through the first four in one sitting.
Step 1: Read the assignment again
Your prompt tells you what kinds of sources will count, so start there. Look for these details:
- How many sources you need
- What types your professor accepts, like journal articles, books, or news
- How recent they have to be
- Which citation style you have to use
If something isn’t clear, ask your professor or TA before you search. One quick email can save you hours later.
Step 2: Get a quick overview of your topic
Start with something easy to read. A textbook chapter, an encyclopedia entry, or a Wikipedia article will show you the main ideas, names, and terms.
You probably won’t cite these. Use them to learn the words people use for your topic. Wikipedia’s reference list can also point you to real sources you can use.
Step 3: Turn your topic into keywords
Search tools match words, so full questions often fail. Pull the main ideas out of your question. Then list other words for each idea.
Say your question is “Does social media hurt sleep in teens?” Your list could look like this:
| Main idea | Other words to try |
|---|---|
| social media | Instagram, TikTok, “screen time” |
| teens | teenagers, adolescents, “high school students” |
| sleep | insomnia, “sleep quality”, “sleep duration” |
Now mix and match. Try "social media" AND sleep AND adolescents, then swap in other words. Our guide on searching library databases explains AND, OR, and quotation marks.
Step 4: Search the right places
Different sources live in different places, so match the place to what you need.
| What you need | Where to look |
|---|---|
| Journal articles | Library databases, Google Scholar |
| Books and ebooks | Your library’s catalog |
| News stories | Your library’s newspaper databases, news sites |
| Government data | Census.gov, Data.gov, federal agency sites |
| Health and medical research | PubMed |
| Education research | ERIC |
| Surveys and public opinion | Pew Research Center |
| Free journal articles | Directory of Open Access Journals (DOAJ) |
Start with your library’s website. It usually lists databases by subject. Your school pays for many of them, so you can often read the full text for free after you log in.
Next, try Google Scholar. It covers many fields, and a search takes seconds. You can also type your topic into the free source finder from Sourcefox to see what turns up.
Keep trying new words as you go. If one keyword brings back nothing useful, move to the next one on your list.
Step 5: Follow the citations
One good source can lead you to several more. You have two moves here.
First, look back. Read the reference list at the end of a paper you like. It shows you what the authors read.
Second, look forward. Find the paper in Google Scholar and click “Cited by.” You’ll see newer work that mentions it. This is a fast way to learn what happened after that paper came out.
Watch for names, too. If the same author keeps coming up, search for that person’s other work.
Step 6: Check each source before you keep it
Don’t add a source to your list just because it came up in a search. Read the abstract, the introduction, and the conclusion first. Then ask two questions. Does it help answer my question? Can I trust it?
Who wrote it, when they wrote it, and what evidence they use all matter. Our guide on how to tell if a source is credible walks you through a simple checklist.
If a source doesn’t help, drop it. You’ll write a better paper with fewer sources that fit than with a long list that doesn’t.
Step 7: Keep track of what you find
Start a simple list in a doc or spreadsheet on day one. For each source, save:
- The author, title, journal or publisher, and year
- The link or DOI
- A line or two on how it helps your paper
- Page numbers for anything you might quote
This feels slow at first. It pays off when you’re writing citations the night before the due date.
What to do when you can’t find enough sources
If you get very few results, your topic may be too narrow or your words too specific. Drop one keyword, or swap in a broader word. “Adolescents” may work better than “ninth graders.”
If you get far too many results, your topic may be too broad. Add a keyword for a place, a group, or a time period. Then use the date filter.
If you’re stuck, ask a librarian. Most college libraries offer help by chat, email, or appointment. Librarians know your school’s databases, and helping students search is part of their job.
Common questions
Where can I find free sources for a research paper?
Your college library is the best place to start, since you already have access as a student. Outside the library, try Google Scholar, DOAJ, PubMed, ERIC, and government sites.
Can I use Wikipedia as a source?
Ask your professor. Many don’t accept it as a cited source. It’s still a good way to learn a topic, and its reference list can lead you to sources you can cite.
What if I find a good article but can’t open it?
Don’t pay for it. Search the title on your library’s website first. In Google Scholar, click “All versions” to look for a free copy. If that fails, ask your library about interlibrary loan, which lets you request items from other libraries.