Cite

[No. 31: Photograph of man cooking in camp]

MLA

[No. 31: Photograph of Man Cooking in Camp]. 1915. https://collections.library.yale.edu/catalog/11679631.

APA, 6th edition

[No. 31: Photograph of man cooking in camp]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11679631.