Cite

[Photograph of Peter Palmquist sitting on a rock in the forest]

MLA

[Photograph of Peter Palmquist Sitting on a Rock in the Forest]. 1957. https://collections.library.yale.edu/catalog/2067640.

APA, 6th edition

[Photograph of Peter Palmquist sitting on a rock in the forest]. (1957). [Negatives]. https://collections.library.yale.edu/catalog/2067640.