Cite

School children forming up into a rifle square, Congo, ca. 1920-1940

MLA

School Children Forming up into a Rifle Square, Congo, Ca. 1920-1940. 1920. https://collections.library.yale.edu/catalog/11455628.

APA, 6th edition

School children forming up into a rifle square, Congo, ca. 1920-1940. (1920). [General views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11455628.