Cite

[View from the summit of Mt. Blackfeet]. 22c

MLA

Blazer, Charlotte Pinkerton, McClintock, Walter, 1870-1949. [View from the summit of Mt. Blackfeet]. 22c. Lantern slides box 1. undated. https://collections.library.yale.edu/catalog/2008372.

APA, 6th edition

Blazer, Charlotte Pinkerton, & McClintock, Walter, 1870-1949. (["Lantern slides box 1"])(undated)[[View from the summit of Mt. Blackfeet]. 22c]. https://collections.library.yale.edu/catalog/2008372.