MLA

Devey, T., of Walworth, active 1814, printmaker, artist, publisher. Field Marshal von Blucher. [June 1814]. https://collections.library.yale.edu/catalog/33559439.

APA, 6th edition

Devey, T., of Walworth, active 1814, printmaker, artist, publisher. ([June 1814])[Field Marshal von Blucher]. https://collections.library.yale.edu/catalog/33559439.