Some graphics are copyright protected and cannot be used without the author’s permission and / or paying a usage fee. Other graphics are in “public domain” and therefore not subject to copyright. Here is a flowchart that will help you determine if a graph is free to use with no limitations.
If you are using a graph that you found in an e-book, a library database, or elsewhere, be sure and list the source underneath the image. The APA citation below represents a graph retrieved from the library’s Statista database.
To find examples of MLA, Chicago, citation styles, use the Purdue University’s Online Writing Lab (OWL) website, https://owl.purdue.edu/.
Correct Citation Format for Chart Shown Above (APA Style)