The license associated with an image determines how it should be listed.
References: General Format
Creator's lastname, Initials. (Year). Or, use (n.d.) when no date is given. Title. [If there is no title include a description in square brackets]. [Type of work: painting, photograph, chart, map, etc.]. Site name. URL
This is used instead of an in-text citation where the image appears in the paper.
Provide a figure number and title and then the image. Below the image, provide a copyright attribution in the figure note, including all of the pieces of information listed below. In a presentation, the figure number and title are optional but the note containing the copyright attribution is required.
General Format: Title, author, date, site name, URL, followed by the name of the Creative Commons License.