MLA

Palade, George E. Capillary Rat Tongue Fenestrae Diaphragms. Yale University School of Medicine, 4AD. https://collections.library.yale.edu/catalog/15817822.

APA, 6th edition

Palade, G. E. (4 C.E.). Capillary rat tongue fenestrae diaphragms [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817822.