Cite

Lord Cochrane from an original picture by W. Walton in possession of his Lordship / [graphic]

MLA

Cooper, Robert, active 1795-1836, printmaker. Lord Cochrane from an original picture by W. Walton in possession of his Lordship / [graphic]. [1 February 1819]. https://collections.library.yale.edu/catalog/33191994.

APA, 6th edition

Cooper, Robert, active 1795-1836, printmaker. ([1 February 1819])[Lord Cochrane from an original picture by W. Walton in possession of his Lordship / [graphic]]. https://collections.library.yale.edu/catalog/33191994.