MLA

Vowles, S., active 1820-1825, printmaker. When a Prince, few were like him!!! Now a king, compleatly, without his equal!!!! [graphic]. [29 August 1820]. https://collections.library.yale.edu/catalog/33245823.

APA, 6th edition

Vowles, S., active 1820-1825, printmaker. ([29 August 1820])[When a Prince, few were like him!!! Now a king, compleatly, without his equal!!!! [graphic]]. https://collections.library.yale.edu/catalog/33245823.