[Photograph of the Grand Canyon]
MLA
Klemm, Robert C. [Photograph of the Grand Canyon]. 1926. https://collections.library.yale.edu/catalog/2018247.
APA, 6th edition
Klemm, R. C. (1926). [Photograph of the Grand Canyon] [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2018247.