MLA

[Three Engraved Circular Medallions from an Unidentified Game] [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/15956829.

APA, 6th edition

[Three engraved circular medallions from an unidentified game] [graphic]. (0 C.E.). [Game pieces, Etchings England London 1750, Engravings England London 1750]. publisher not identified. https://collections.library.yale.edu/catalog/15956829.