Cite

The magnanimous ally [graphic] : painted at Petersburg.

MLA

Gillray, James, 1756-1815, printmaker. The magnanimous ally [graphic] : painted at Petersburg.. 1801 January 20. https://collections.library.yale.edu/catalog/11860982.

APA, 6th edition

Gillray, James, 1756-1815, printmaker. (1801 January 20)[The magnanimous ally [graphic] : painted at Petersburg.]. https://collections.library.yale.edu/catalog/11860982.