Attributing the creator is necessary anytime you use an image. Whether you had to obtain permission or it was freely available to use, it is necessary to give credit to the creator or copyright holder. Make sure to read the usage rights statements on websites to understand if there is specific wording that needs to be used.
There are potentially three places you will need to cite.
Consult the style guide examples in this guide for examples.
Web Only Image
The aurora borealis (see fig.1) is a natural multicolor light display produced by solar wind particles seem in high latitude regions.
Fig. 1. “Aurora Over Calgary and Spokane.” NASA’s Marshall Space Flight Center.
Works Cited Example
Last-name, First-name or Username. “Title of Image.” Medium of work. Date of resource creation. Name of site. URL
NASA’s Marshall Space Flight Center. “Aurora Over Calgary and Spokane.” Photograph. 19 Feb. 2012. Flickr. https://www.flickr.com/photos/nasamarshall/14743833915/in/photolist-osS1a2
You will need to provide as much information as possible.
The aurora borealis (see Figure 1) is a natural multicolor light display produced by solar wind particles seem in high latitude regions
Figure 1. Aurora Over Calgary and Spokane. This figure illustrates the aurora borealis aboard the International Space Station. Image credit: NASA’s Marshall Space Flight Center via Flickr.
Last-name, first-name initial. (Year of creation). Title of image or description of work. [Type of work]. Website. URL
NASA’s Marshall Space Flight Center. (2012) Aurora Over Calgary and Spokane. [Digital Image]. Flickr. https://www.flickr.com/photos/nasamarshall/14743833915/