Cite

[Unidentified mountain scene]. 171

MLA

[Unidentified Mountain Scene]. 171. 0AD. https://collections.library.yale.edu/catalog/2016918.

APA, 6th edition

[Unidentified mountain scene]. 171. (0 C.E.). [Photographic prints, Photographs, Stereographs]. https://collections.library.yale.edu/catalog/2016918.