MLA

Palade, George E. Mitochondria Guinea Pig Pancreas Lipid Droplets. Yale University School of Medicine, 5AD. https://collections.library.yale.edu/catalog/15817933.

APA, 6th edition

Palade, G. E. (5 C.E.). Mitochondria Guinea Pig Pancreas lipid droplets [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817933.