MLA

Palade, George E. Mitochondria Guinea Pig Pancreas Lipid Droplet. Yale University School of Medicine, 1AD. https://collections.library.yale.edu/catalog/15817932.

APA, 6th edition

Palade, G. E. (1 C.E.). Mitochondria Guinea Pig Pancreas lipid droplet [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817932.