MLA

The Brightest Star in the State, or, A Peep out of a Royal Window [Graphic]. Pubd. Novr. 1820 by Benbow, corner of St. Clements Church Yard, Strand, 0AD. https://collections.library.yale.edu/catalog/33245930.

APA, 6th edition

The brightest star in the state, or, A peep out of a royal window [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1820, Etchings England London 1820, Annotations (Provenance) 19th century]. Pubd. Novr. 1820 by Benbow, corner of St. Clements Church Yard, Strand. https://collections.library.yale.edu/catalog/33245930.