Cite

Two views of gymnastic class, Kisantu, Congo, ca. 1920-1940

MLA

Two Views of Gymnastic Class, Kisantu, Congo, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11455119.

APA, 6th edition

Two views of gymnastic class, Kisantu, Congo, ca. 1920-1940. (1920). [General views (AAT), photographic postcards (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11455119.