Cite

Dug-out cave home, Gansu Province, China, ca. 1926

MLA

Caldwell, Mary W. Dug-out Cave Home, Gansu Province, China, Ca. 1926. 1926. https://collections.library.yale.edu/catalog/11423947.

APA, 6th edition

Caldwell, M. W. (1926). Dug-out cave home, Gansu Province, China, ca. 1926 [Exterior views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11423947.