MLA

Darly, Matthias, approximately 1720-approximately 1778, printmaker. Deep ones [graphic]. June 17, 1777.. https://collections.library.yale.edu/catalog/10723282.

APA, 6th edition

Darly, Matthias, approximately 1720-approximately 1778, printmaker. (June 17, 1777.)[Deep ones [graphic]]. https://collections.library.yale.edu/catalog/10723282.