MLA

Steinberg, Saul, 1914-1999. Evelyn Hofer's photographs of Steinberg in paper bag mask and painted camouflage outfit. Box 294, folder 4350. 1980. https://collections.library.yale.edu/catalog/2017598.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 294, folder 4350"])(1980)[Evelyn Hofer's photographs of Steinberg in paper bag mask and painted camouflage outfit]. https://collections.library.yale.edu/catalog/2017598.