MLA

Bonnor, Thomas, and printmaker. Will. Warren Esq. & Mariana Catchmay His Wife [Graphic]. Publish'd as the act directs by Richd. Bigland, 0AD. https://collections.library.yale.edu/catalog/16194626.

APA, 6th edition

Bonnor, T., & printmaker. (0 C.E.). Will. Warren Esq. & Mariana Catchmay his wife [graphic] [Engravings England London 1788]. Publish'd as the act directs by Richd. Bigland. https://collections.library.yale.edu/catalog/16194626.