MLA

Gillray, James, 1756-1815, printmaker. A cognocenti [sic] contemplating [the] beauties of [the] antique [graphic] / Js. Gillray invt. & fect.. 1801 February 11. https://collections.library.yale.edu/catalog/11861016.

APA, 6th edition

Gillray, James, 1756-1815, printmaker. (1801 February 11)[A cognocenti [sic] contemplating [the] beauties of [the] antique [graphic] / Js. Gillray invt. & fect.]. https://collections.library.yale.edu/catalog/11861016.