Cite

Entering a canyon, Gansu Province, China, ca. 1926

MLA

Caldwell, Mary W. Entering a Canyon, Gansu Province, China, Ca. 1926. 1926. https://collections.library.yale.edu/catalog/11423943.

APA, 6th edition

Caldwell, M. W. (1926). Entering a canyon, Gansu Province, China, ca. 1926 [General views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11423943.