MLA

The Royal Green Bag, or, Another Ministerial Scare Crow [Graphic]. Pub. June 10, 1820, by S.W. Fores, 41 Picadilli [sic], 0AD. https://collections.library.yale.edu/catalog/33245651.

APA, 6th edition

The royal green bag, or, Another ministerial scare crow [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1820, Etchings England London 1820, Annotations (Provenance) 19th century, Watermarks (Paper)]. Pub. June 10, 1820, by S.W. Fores, 41 Picadilli [sic]. https://collections.library.yale.edu/catalog/33245651.