MLA

The Little Unknown. [Graphic]. Plate 2nd. Printed for and published by Thompson, 6 Gloucester Street, Lambeth, 0AD. https://collections.library.yale.edu/catalog/15808744.

APA, 6th edition

The little unknown. [graphic]. Plate 2nd. (0 C.E.). [Satires (Visual works) England 1830, Woodcuts England London 1830, Broadsides England London 1830]. Printed for and published by Thompson, 6 Gloucester Street, Lambeth. https://collections.library.yale.edu/catalog/15808744.