MLA

Cruikshank, George, 1792-1878, printmaker. Blockheads [graphic].. [approximately late August-December 1819]. https://collections.library.yale.edu/catalog/33245762.

APA, 6th edition

Cruikshank, George, 1792-1878, printmaker. ([approximately late August-December 1819])[Blockheads [graphic].]. https://collections.library.yale.edu/catalog/33245762.