Cite

The Right Honourable Edward Harley Earl of Oxford and Earl Mortimer, son of Robert Harley, Earl of Oxford and Earl Mortimer, Lord High Treasurer of Great Britain, &c. [graphic]

MLA

Vertue, George, 1684-1756, printmaker. The Right Honourable Edward Harley Earl of Oxford and Earl Mortimer, son of Robert Harley, Earl of Oxford and Earl Mortimer, Lord High Treasurer of Great Britain, &c. [graphic]. [1745?]. https://collections.library.yale.edu/catalog/33300112.

APA, 6th edition

Vertue, George, 1684-1756, printmaker. ([1745?])[The Right Honourable Edward Harley Earl of Oxford and Earl Mortimer, son of Robert Harley, Earl of Oxford and Earl Mortimer, Lord High Treasurer of Great Britain, &c. [graphic]]. https://collections.library.yale.edu/catalog/33300112.