Cite

"In the Materials-Testing Lab., Chief Technician Ho directing student on lathe work"

MLA

"In the Materials-Testing Lab., Chief Technician Ho Directing Student on Lathe Work". 1950. https://collections.library.yale.edu/catalog/16856502.

APA, 6th edition

"In the Materials-Testing Lab., Chief Technician Ho directing student on lathe work". (1950). [Photographs (AAT)]. https://collections.library.yale.edu/catalog/16856502.