Cite

An excrescence, a fungus, alias, A toadstool upon a dung-hill [graphic].

MLA

Gillray, James, 1756-1815, printmaker. An excrescence, a fungus, alias, A toadstool upon a dung-hill [graphic].. [20 December 1791]. https://collections.library.yale.edu/catalog/10732679.

APA, 6th edition

Gillray, James, 1756-1815, printmaker. ([20 December 1791])[An excrescence, a fungus, alias, A toadstool upon a dung-hill [graphic].]. https://collections.library.yale.edu/catalog/10732679.