MLA

Portrait of a Noble Duke [Graphic]. Published by Thos. McLean, 26, Haymarket, 1829. https://collections.library.yale.edu/catalog/16227463.

APA, 6th edition

Portrait of a noble duke [graphic]. (1829). [Caricatures and cartoons, Portrait prints, Engravings England London 19th century]. Published by Thos. McLean, 26, Haymarket. https://collections.library.yale.edu/catalog/16227463.