Cite

[Unidentified woman riding a horse through a canyon]

MLA

Prudden, T. Mitchell. [Unidentified Woman Riding a Horse through a Canyon]. 0AD. https://collections.library.yale.edu/catalog/2018311.

APA, 6th edition

Prudden, T. M. (0 C.E.). [Unidentified woman riding a horse through a canyon] [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2018311.