MLA

Revd. Wm. Thorp of Bristol / [Graphic]. Published March 13, 1818, by J.J. Pace, 1 & 2 Wells St., Oxford St., 0AD. https://collections.library.yale.edu/catalog/15956824.

APA, 6th edition

Revd. Wm. Thorp of Bristol / [graphic]. (0 C.E.). [Portrait prints, Etchings England London 1818]. Published March 13, 1818, by J.J. Pace, 1 & 2 Wells St., Oxford St. https://collections.library.yale.edu/catalog/15956824.