Cite

Missionary sister standing among seated students, Congo, ca. 1920-1940

MLA

Missionary Sister Standing among Seated Students, Congo, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11455748.

APA, 6th edition

Missionary sister standing among seated students, Congo, ca. 1920-1940. (1920). [General views (AAT), photographic postcards (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11455748.