MLA

Lockington, John, and printmaker. Push Pin [Graphic]. 0AD. https://collections.library.yale.edu/catalog/10723099.

APA, 6th edition

Lockington, J., & printmaker. (0 C.E.). Push pin [graphic] [Satires (Visual works) England 1777, Etchings England London 1777, Drypoints England London 1777]. https://collections.library.yale.edu/catalog/10723099.