MLA

Brocas, H., and printmaker. Savoy Hospital [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/17338999.

APA, 6th edition

Brocas, H., & printmaker. (0 C.E.). Savoy Hospital [graphic] [Etchings]. publisher not identified. https://collections.library.yale.edu/catalog/17338999.