Cite

[Unidentified mountain scene]. 169

MLA

[Unidentified Mountain Scene]. 169. 0AD. https://collections.library.yale.edu/catalog/2016916.

APA, 6th edition

[Unidentified mountain scene]. 169. (0 C.E.). [Photographic prints, Photographs, Stereographs]. https://collections.library.yale.edu/catalog/2016916.