If you are reusing CC licensed content from other creators, you need to provide proper attribution. Attribution best practice is to include the title of the work, the author, a link to the source, the type of CC license, and a link to the CC license. The Creative Commons Best Practices for Attribution Wiki page has more information about providing attribution.
Attribution for an Image
"Creative Commons 10th Birthday Celebration San Francisco" by Timothy Vollmer is licensed under CC-BY-2.0
Attribution for a Derivative Work
If your work is a modification or adaptation of another work, indicate this and provide attribution to the creator of the original work. You should also include a link to the work you modified and indicate what license applies to that work.
This work, "90fied", is adapted from "Creative Commons 10th Birthday Celebration San Francisco" by Timothy Vollmer, used under CC BY 4.0. "90fied" is licensed under CC BY 4.0 by [Your name here].
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