MLA

Murphy, Gerald, 1888-1964. Gerald Murphy while attending Yale University, group of unidentified people picnicking, and garden. Box 27, folder 524. circa 1912. https://collections.library.yale.edu/catalog/10960816.

APA, 6th edition

Murphy, Gerald, 1888-1964. (["Box 27, folder 524"])(circa 1912)[Gerald Murphy while attending Yale University, group of unidentified people picnicking, and garden]. https://collections.library.yale.edu/catalog/10960816.