Cite

Lord Mum sucking his thumb [graphic]

MLA

Cruikshank, Isaac, 1764-1811, printmaker. Lord Mum sucking his thumb [graphic]. [10 November 1796]. https://collections.library.yale.edu/catalog/10952989.

APA, 6th edition

Cruikshank, Isaac, 1764-1811, printmaker. ([10 November 1796])[Lord Mum sucking his thumb [graphic]]. https://collections.library.yale.edu/catalog/10952989.