Review the sections before for more information.
Types of Sources
Reference Books
Provide general overviews of topics, to help quickly identify central issues, important figures, and key dates or events. Check our Reference Sources, search our Discovery Service to find a Research Starter, or look for a reference book in our Library Catalogue.
|
Books & eBooks
Contain in-depth perspectives, and are likely to provide a thorough, detailed and historical overview of a subject. The Library’s Discovery Service offers immediate, full-text access to almost 200,000 e-books, and records for almost 70,000 print books in our General Collection.
|
Scholarly Articles
Also described as “peer-reviewed” articles, these articles are published inside academic journals. They tend to provide high-level analyses or reports of in-depth research on specific topics of academic or scientific study. They are written by scholars, scientists, researchers and other subject specialists to inform their peers about crucial developments in their respective fields of inquiry. You can search for scholarly (peer-reviewed) articles in one of our Article Databases or use our Discovery Service to search through several of our databases at one time.
|
Magazine & Newspaper Articles
The articles that appear in mainstream magazines and newspapers are typically written by reporters or columnists, and are meant to inform and entertain the general public. Search for articles in one of our Article Databases or use our Discovery Service.
For newspaper articles, search our Subscriptions or browse our links to Newspaper Websites. |
Websites & Blogs
These web-based sources can provide a wealth of reliable information, but, if you hope to use them to support arguments in your own research, then you must be critical and evaluate them for Credibility, Relevance, Authority, Accuracy, and Purpose (CRAAP). When looking for credible sources online, you might consider browsing our collection of Websites by Subject.
|
Scholarly vs. Popular Sources
When you have a research paper to write, you will usually be required to gather a particular number, and type, of sources.
Sometimes, depending on the topic or assignment, your teacher will ask you to include popular sources, such as an article from a magazine or newspaper, or a page from a website. More often, however, you will be asked to find scholarly sources on your topic.
When conducting a piece of serious research, scholarly sources are preferable because they are written by experts, include references you can consult, and have been carefully edited and evaluated by other experts.
Whatever sources you choose, it is important that you carefully evaluate the information you find.
A Quick Comparison
Sometimes, depending on the topic or assignment, your teacher will ask you to include popular sources, such as an article from a magazine or newspaper, or a page from a website. More often, however, you will be asked to find scholarly sources on your topic.
When conducting a piece of serious research, scholarly sources are preferable because they are written by experts, include references you can consult, and have been carefully edited and evaluated by other experts.
Whatever sources you choose, it is important that you carefully evaluate the information you find.
A Quick Comparison
Scholarly Journals |
Examples: Journal of Politics, Philosophical Quarterly, World Politics, Human Biology |
Articles written by experts: often professors |
Articles often go through a peer review process: independent experts evaluate the article before it’s published |
Articles have footnotes and bibliographies |
Minimal advertising, graphics, or illustrations unless relevant to the article (for example, art journals) |
Popular Magazines |
Examples: People, Time, Newsweek, Vogue, National Geographic, The New Yorker |
Articles written by non-specialists |
Articles are reviewed by an editor, but not by a panel of experts |
Articles may or may not mention sources in the text |
Extensive advertising, lavish photos, colorful cover to market the magazine |
Comparison table from Georgetown University Library
Primary vs. Secondary Sources
Some assignments are very specific in requesting you to find primary, as distinct from secondary, sources. Check the comparison table below to learn the difference.
Primary Sources |
A primary source is a document or physical object which was written or created during the time under study. These sources were present during an experience or time period and offer an inside view of a particular event. |
Some types of primary sources include:
|
Examples of primary sources include:
|
Secondary Sources |
A secondary source interprets and analyzes primary sources. These sources are one or more steps removed from the event. Secondary sources may have pictures, quotes or graphics of primary sources in them. |
Some types of secondary sources include:
|
Examples of secondary sources include:
|
Text from Princeton University Library
Evaluating Information
Is the information you’re finding CRAAP? Is it Current, Relevant, Authoritative, Accurate, and have a clear Purpose?
Visit our Evaluating Information page to see what types of questions you should be asking as you choose your sources for your research projects.