Cite

From lower Yosemite Valley, left to right: North Dome, Cloud's Rest and Half Dome. A41

MLA

From Lower Yosemite Valley, Left to Right: North Dome, Cloud's Rest and Half Dome. A41. 0AD. https://collections.library.yale.edu/catalog/2017219.

APA, 6th edition

From lower Yosemite Valley, left to right: North Dome, Cloud's Rest and Half Dome. A41. (0 C.E.). [Lantern slides, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017219.