Cite

Modern enigma's [sic] [graphic]

MLA

Modern Enigma's [Sic] [Graphic]. Pub. acc. to act April 1, 1776, by M Darly 39 Strand, 0AD. https://collections.library.yale.edu/catalog/10723015.

APA, 6th edition

Modern enigma's [sic] [graphic]. (0 C.E.). [Engravings England London 1776, Etchings England London 1776]. Pub. acc. to act April 1, 1776, by M Darly 39 Strand. https://collections.library.yale.edu/catalog/10723015.