MLA

Dean, T. A., and printmaker. [Portrait of Lawrence When a Boy] [Graphic]. H. Colburn & R. Bentley, 0AD. https://collections.library.yale.edu/catalog/10980014.

APA, 6th edition

Dean, T. A., & printmaker. (0 C.E.). [Portrait of Lawrence when a boy] [graphic]. [Portrait prints, Proofs before letters, Stipple engravings England London 1831, Chine collé prints England London 1831]. H. Colburn & R. Bentley. https://collections.library.yale.edu/catalog/10980014.