MLA

Monstrosities in the Gardens of the Zoological Society, or, The Regent's Park Turned into a Bear Garden [Graphic]. Pub. by E. King, Chancery Lane, 1829. https://collections.library.yale.edu/catalog/11128775.

APA, 6th edition

Monstrosities in the gardens of the Zoological Society, or, The Regent's Park turned into a bear garden [graphic]. (1829). [Satires (Visual works) England 1829, Etchings England London 1829]. Pub. by E. King, Chancery Lane. https://collections.library.yale.edu/catalog/11128775.