Cite

Sketch showing ascents of Mt. Sir Donald and Uto Peak, made from a photograph from Abbott Ridge.

MLA

Sketch Showing Ascents of Mt. Sir Donald and Uto Peak, Made from a Photograph from Abbott Ridge. 0AD. https://collections.library.yale.edu/catalog/15536320.

APA, 6th edition

Sketch showing ascents of Mt. Sir Donald and Uto Peak, made from a photograph from Abbott Ridge. (0 C.E.). [Maps]. https://collections.library.yale.edu/catalog/15536320.