MLA

Doctor Blowbladder Discovering the Perpetual Motion [Graphic]. Printed for Carington Bowles, Map & Printseller, No. 69 in St. Pauls Church Yard, London, 0AD. https://collections.library.yale.edu/catalog/15949993.

APA, 6th edition

Doctor Blowbladder discovering the perpetual motion [graphic]. (0 C.E.). [Satires (Visual works) England 1772, Mezzotints England London 1772]. Printed for Carington Bowles, Map & Printseller, No. 69 in St. Pauls Church Yard, London. https://collections.library.yale.edu/catalog/15949993.