MLA

Merke, Henri, and printmaker. Last Dying Speech & Confession [Graphic]. Pub. Feb. 20, 1799, at R. Ackermann's, 101 Strand, 0AD. https://collections.library.yale.edu/catalog/11791742.

APA, 6th edition

Merke, H., & printmaker. (0 C.E.). Last dying speech & confession [graphic] [Cries, Satires (Visual works) England 1799, Aquatints England London 1799, Etchings England London 1799]. Pub. Feb. 20, 1799, at R. Ackermann's, 101 Strand. https://collections.library.yale.edu/catalog/11791742.