MLA

Stadler, Joseph Constantine, and printmaker. Harrow School [Graphic]. Pubd. June 1, 1816, at 101 Strand, for R. Ackermann's History of Harrow School, 0AD. https://collections.library.yale.edu/catalog/33191856.

APA, 6th edition

Stadler, J. C., & printmaker. (0 C.E.). Harrow school [graphic] [Views, Engravings, Book illustrations, Aquatints England London 1816]. Pubd. June 1, 1816, at 101 Strand, for R. Ackermann's History of Harrow School. https://collections.library.yale.edu/catalog/33191856.