MLA

A Bit of Blood [Graphic]. Publish'd Augst. 1st, 1787, by W. Dickinson, engraver & printseller, No. 158 Bond Street, 0AD. https://collections.library.yale.edu/catalog/10728337.

APA, 6th edition

A bit of blood [graphic]. (0 C.E.). [Satires (Visual works) England 1787, Stipple engravings England London 1787, Book illustrations]. Publish'd Augst. 1st, 1787, by W. Dickinson, engraver & printseller, No. 158 Bond Street. https://collections.library.yale.edu/catalog/10728337.