MLA

Bockman, Gerhard, 1686-1773, printmaker. John Wilkes, Esqr. member of Parliament for the county of Middlesex, alderman of the ward of Farringdon Without; friend to liberty, a lover of his king, opposer of ministerial tyranny and defender of his country / [graphic]. published as the act directs April 14, 1769.. https://collections.library.yale.edu/catalog/10993163.

APA, 6th edition

Bockman, Gerhard, 1686-1773, printmaker. (published as the act directs April 14, 1769.)[John Wilkes, Esqr. member of Parliament for the county of Middlesex, alderman of the ward of Farringdon Without; friend to liberty, a lover of his king, opposer of ministerial tyranny and defender of his country / [graphic]]. https://collections.library.yale.edu/catalog/10993163.