Cite

The upper section of Yosemite Falls. A28

MLA

The Upper Section of Yosemite Falls. A28. 0AD. https://collections.library.yale.edu/catalog/2017109.

APA, 6th edition

The upper section of Yosemite Falls. A28. (0 C.E.). [Lantern slides, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017109.