MLA

The National Contrast [Graphic]. Pub'd May 30th, 1780, by Wm. Humphrey No. 227 Strand, 0AD. https://collections.library.yale.edu/catalog/10723409.

APA, 6th edition

The national contrast [graphic]. (0 C.E.). [Satires (Visual works) England 1780, Mezzotints England London 1780, Annotations (Provenance) 18th century]. Pub'd May 30th, 1780, by Wm. Humphrey No. 227 Strand. https://collections.library.yale.edu/catalog/10723409.