Cite

Dugout cave homes in the side of cliffs, Gansu Province, China, ca. 1926

MLA

Caldwell, Mary W. Dugout Cave Homes in the Side of Cliffs, Gansu Province, China, Ca. 1926. 1926. https://collections.library.yale.edu/catalog/11423946.

APA, 6th edition

Caldwell, M. W. (1926). Dugout cave homes in the side of cliffs, Gansu Province, China, ca. 1926 [General views (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11423946.