MLA

Palace Hotel Corridor, S.F. (B 3666). 0AD. https://collections.library.yale.edu/catalog/2009721.

APA, 6th edition

Palace Hotel corridor, S.F. (B 3666). (0 C.E.). [Cabinet photographs, Card photographs, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2009721.