MLA

Palade, George E., and Sanford Palay. Guinea Pig Pancreas Morphology. Yale University School of Medicine, 12AD. https://collections.library.yale.edu/catalog/15817848.

APA, 6th edition

Palade, G. E., & Palay, S. (12 C.E.). Guinea Pig Pancreas Morphology [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817848.