MLA

Push-Pin [Graphic]. Published by John Miller, Bridge Street, and W. Blackwood, Edinburgh, 0AD. https://collections.library.yale.edu/catalog/11106100.

APA, 6th edition

Push-pin [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1797, Engravings England London 1797, Etchings England London 1797]. Published by John Miller, Bridge Street, and W. Blackwood, Edinburgh. https://collections.library.yale.edu/catalog/11106100.