MLA

Four & Twenty Hobby-Horses All of a Row [Graphic]. Published May 1st, 1819, at R. Ackermann's Repository of Arts, 101 Strand, Printed by L. Harrison, 373, Strand, 0AD. https://collections.library.yale.edu/catalog/10967962.

APA, 6th edition

Four & twenty hobby-horses all of a row [graphic]. (0 C.E.). [Satires (Visual works) England 1819, Aquatints England London 1819, Etchings England London 1819, Watermarks (Paper)]. Published May 1st, 1819, at R. Ackermann's Repository of Arts, 101 Strand, Printed by L. Harrison, 373, Strand. https://collections.library.yale.edu/catalog/10967962.