MLA

Palade, George E. Liver 1 Day Old Rat Tangential Section Nuclear Pores. Yale University School of Medicine, 4AD. https://collections.library.yale.edu/catalog/15817926.

APA, 6th edition

Palade, G. E. (4 C.E.). Liver 1 Day old rat tangential section nuclear pores [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817926.