MLA

Gillray, James, 1756-1815, printmaker. "The inexpressible air of dignity, the incomprehensible je-ne-scais-quoi of elegance ... [graphic]. [9 March 1803]. https://collections.library.yale.edu/catalog/11861146.

APA, 6th edition

Gillray, James, 1756-1815, printmaker. ([9 March 1803])["The inexpressible air of dignity, the incomprehensible je-ne-scais-quoi of elegance ... [graphic]]. https://collections.library.yale.edu/catalog/11861146.