MLA

Schaefer, F. L. Congenital Polycystic Kidney. 1918. https://collections.library.yale.edu/catalog/15948568.

APA, 6th edition

Schaefer, F. L. (1918). Congenital polycystic kidney [Drawings (AAT)]. https://collections.library.yale.edu/catalog/15948568.