MLA

Palade, George E. Liver 1 Day Old Rat Mitochondria Tangential Section RER. Yale University School of Medicine, 7AD. https://collections.library.yale.edu/catalog/15817923.

APA, 6th edition

Palade, G. E. (7 C.E.). Liver 1 Day old rat mitochondria tangential section RER [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817923.