MLA

Murphy, Gerald, 1888-1964. Harrys Bar, Montana-Vermala, Switzerland. Box 29, folder 579. 1929-1931. https://collections.library.yale.edu/catalog/10081387.

APA, 6th edition

Murphy, Gerald, 1888-1964. (["Box 29, folder 579"])(1929-1931)[Harrys Bar, Montana-Vermala, Switzerland]. https://collections.library.yale.edu/catalog/10081387.