Cite

Hookworm prevention, Sichuan, China, ca. 1920-1930

MLA

Hookworm Prevention, Sichuan, China, Ca. 1920-1930. 1920. https://collections.library.yale.edu/catalog/11425377.

APA, 6th edition

Hookworm prevention, Sichuan, China, ca. 1920-1930. (1920). [General views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11425377.