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Citing Sources: APA Style

A guide to citing sources designed and created by Clark Librarians

When Should I Cite?

Any time your work contains or refers to someone else's

  • ideas
  • words
  • images
  • media
  • sounds

... you need to include a citation.

1. In-text citations should be inserted at the point of use in your assignment and indicate that the information you just presented came from a source other than your own brain or common knowledge.

2. A Works Cited or References section should be included at the end of your assignment.

3. In Works Cited / References, list all the works you referred to with in-text citations in the body of your assignment.

4. There are many citation styles, each with it's own precise formatting. The most popular at Clark are MLA and APA.


APA has updated how Digital Object Identifiers (doi) are formatted. Read the short blog post here:

In a nutshell, format the doi to include the “”

APA Style

Guides from Clark College Libraries and other sources:

Formatting Title Page and Headers in APA

Here is a short step-by-step video of the directions below.

  1. Open a Word document
  2. Click on "Insert"
  3. Choose "Header"
  4. Choose first option “Blank"
  5. Check “Different First Page”
  6. In upper left corner type:  Running head: YOUR TITLE IN ALL CAPS
  7. Tab over to right margin
  8. Click on “Page Number”
  9. Click on “Current Position”
  10. Choose first option “Plain Number”
  11. Highlight your text and page number and make sure that both are Times New Roman, size 12
  12. Close Header and Footer
  13. Select double spacing and centered in paragraph area. In the top third of the page type: paper title, your name, and institution name. Example:

My Research Paper 

Student A. Body

Clark College

  1. Now enter (return) down to the end of the page until you reach the second page of your document
  2. Click on "Insert"
  3. Choose "Header"
  4. Choose first option “Blank”
  5. In upper left corner type:  YOUR TITLE IN ALL CAPS  (Note: No running head here!)
  6. Tab over to right margin.
  7. Click on “Page Number”
  8. Click on “Current Position”
  9. Choose first option “Plain Number”
  10. Highlight your text and page number and make sure that both are Times New Roman, size 12
  11. You’re done – your title page and headers for your APA paper are set up. To change the information on the template, go to Insert, Header and Edit Header.

When in Doubt - ASK!

If you have any questions about citations or plagiarism that are not answered on these pages, be sure to ask for clarification from:

Get help any time! Call, email, 24/7 Chat. List of library open hours.

Cite Sources - APA - Books

Citations for Graphs and Images

If you include a graph, table, chart, or image that is not your own in the body of your text or on a presentation slide, use the following citation underneath it:


[Your Image Here] 


Figure 1. Description, if needed. Adapted from "Title of Article or Webpage," by Author(s), Year, Title of Journal or Website, Volume, page number, retrieved from URL. Copyright Year by Copyright Holder.

See here and here for specific examples. Also see pages 150-167 of the APA Manual and this APA Style Blog post.

You should also include a full reference citation at the end of your paper or presentation.