MLA

Palade, George E. Muscle Rat Skeletal Muscle. Yale University School of Medicine, 4AD. https://collections.library.yale.edu/catalog/15817942.

APA, 6th edition

Palade, G. E. (4 C.E.). Muscle rat skeletal muscle [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817942.