Murphy, Gerald, multiple exposure portrait, made into postcard by J. Weiss, Basel, Switzerland
MLA
Weiss, J. Murphy, Gerald, Multiple Exposure Portrait, Made into Postcard by J. Weiss, Basel, Switzerland. 1930. https://collections.library.yale.edu/catalog/10602807.
APA, 6th edition
Weiss, J. (1930). Murphy, Gerald, multiple exposure portrait, made into postcard by J. Weiss, Basel, Switzerland [Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/10602807.