Cite

Man standing outside an igloo, Canada, ca. 1920-1940

MLA

Man Standing Outside an Igloo, Canada, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11477873.

APA, 6th edition

Man standing outside an igloo, Canada, ca. 1920-1940. (1920). [General views (AAT), photographic postcards (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11477873.