MLA

Thos. Pow [Shoemaker] [Graphic]. Thos. Pow, 0AD. https://collections.library.yale.edu/catalog/16830601.

APA, 6th edition

Thos. Pow [shoemaker] [graphic]. (0 C.E.). [Advertisements, Trade cards (advertising), Ephemera, Engravings England London 1757]. Thos. Pow. https://collections.library.yale.edu/catalog/16830601.