MLA

Capt. John Brewer. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/2015607.

APA, 6th edition

Capt. John Brewer. (0 C.E.). [Pictorial works, Portraits, Halftone photomechanical prints]. publisher not identified. https://collections.library.yale.edu/catalog/2015607.