Cite

Boy standing outdoors for a photograph, Canada, ca. 1920-1940

MLA

Boy Standing Outdoors for a Photograph, Canada, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11477902.

APA, 6th edition

Boy standing outdoors for a photograph, Canada, ca. 1920-1940. (1920). [Photographic postcards (AAT), photographs (AAT), portraits (AAT)]. https://collections.library.yale.edu/catalog/11477902.