MLA

Rudzinska, M. Unicellular Organisms Euglena. Yale University School of Medicine, 9AD. https://collections.library.yale.edu/catalog/15817979.

APA, 6th edition

Rudzinska, M. (9 C.E.). Unicellular Organisms Euglena [Transmission electron micrograph]. Yale University School of Medicine. https://collections.library.yale.edu/catalog/15817979.