MLA

Colley, Thomas, active 1780-1783, printmaker. A petrified lusus naturae lately discovered in the ruins of a temple once dedicated to liberty by the Britons / [graphic]. Mayth [sic] 6, 1783.. https://collections.library.yale.edu/catalog/10724758.

APA, 6th edition

Colley, Thomas, active 1780-1783, printmaker. (Mayth [sic] 6, 1783.)[A petrified lusus naturae lately discovered in the ruins of a temple once dedicated to liberty by the Britons / [graphic]]. https://collections.library.yale.edu/catalog/10724758.