MLA

Who's Mistress Now [Graphic] / Rowlandson Del. 0AD. https://collections.library.yale.edu/catalog/11791895.

APA, 6th edition

Who's mistress now [graphic] / Rowlandson del. (0 C.E.). [Etchings--England--London--1806., Satires (Visual works)--England--1804.]. https://collections.library.yale.edu/catalog/11791895.