Cite

[Voltaire, the French philosopher, and Mr. Watson, an Edinburgh messenger] [graphic]

MLA

Kay, John, 1742-1826, printmaker. [Voltaire, the French philosopher, and Mr. Watson, an Edinburgh messenger] [graphic]. [1789]. https://collections.library.yale.edu/catalog/15950056.

APA, 6th edition

Kay, John, 1742-1826, printmaker. ([1789])[[Voltaire, the French philosopher, and Mr. Watson, an Edinburgh messenger] [graphic]]. https://collections.library.yale.edu/catalog/15950056.