Cite

Aerial view of an observatory, Antananarivo, Madagascar, ca. 1920-1940

MLA

Aerial View of an Observatory, Antananarivo, Madagascar, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11432888.

APA, 6th edition

Aerial view of an observatory, Antananarivo, Madagascar, ca. 1920-1940. (1920). [Aerial views (AAT), photographic postcards (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11432888.