MLA

Jamieson, James D. Zymogen Granule Fraction Guinea Pig Pancreas Low Magnification. Yale University School of Medicine, 10AD. https://collections.library.yale.edu/catalog/15817992.

APA, 6th edition

Jamieson, J. D. (10 C.E.). Zymogen granule fraction guinea pig pancreas low magnification [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817992.