MLA

Mr. Thomas Betterton. 0AD. https://collections.library.yale.edu/catalog/2020203.

APA, 6th edition

Mr. Thomas Betterton. (0 C.E.). [Engravings, Frontispieces (Illustrations), Photographic prints, Photographs, Prints (Visual works), Studio portraits]. https://collections.library.yale.edu/catalog/2020203.