MLA

Schaefer, F. L. Carcinoma of the Uterus Showing Metaplasia of Epithelium from the Cylindrical to the Squamous Type. 1918. https://collections.library.yale.edu/catalog/15948191.

APA, 6th edition

Schaefer, F. L. (1918). Carcinoma of the Uterus Showing Metaplasia of Epithelium from the Cylindrical to the Squamous Type [Drawings (AAT)]. https://collections.library.yale.edu/catalog/15948191.