MLA

Barlow, Inigo, and printmaker. Magnetic Dispensary [Graphic]. Publish'd as the act directs by Bentley & Co., 0AD. https://collections.library.yale.edu/catalog/10731220.

APA, 6th edition

Barlow, I., & printmaker. (0 C.E.). Magnetic dispensary [graphic] [Caricatures and cartoons, Satires (Visual works) England 1790, Periodical illustrations England 1790, Etchings England London 1790]. Publish'd as the act directs by Bentley & Co. https://collections.library.yale.edu/catalog/10731220.