Willm. Loader [graphic].
MLA
Willm. Loader [Graphic]. Published Feb 1st 1791, by S. Parker, 0AD. https://collections.library.yale.edu/catalog/17338499.
APA, 6th edition
Willm. Loader [graphic]. (0 C.E.). [Portraits prints, Aquatints]. Published Feb 1st 1791, by S. Parker. https://collections.library.yale.edu/catalog/17338499.