MLA

Tea-Drinking Symptoms of Polite Conversation / [Graphic]. Publish'd Septr. 1st, 1794, by H. Humphrey, No. 37 New Bond Street, 0AD. https://collections.library.yale.edu/catalog/17355583.

APA, 6th edition

Tea-drinking symptoms of polite conversation / [graphic]. (0 C.E.). [Satires (Visual works) England 1794, Stipple engravings England London 1794, Etchings England London 1794, Engravings England London 1794]. Publish'd Septr. 1st, 1794, by H. Humphrey, No. 37 New Bond Street. https://collections.library.yale.edu/catalog/17355583.