MLA

[Arms of the Foundling Hospital] Engrav'd from the Original in the Collection of the Earl of Exeter / [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/16194006.

APA, 6th edition

[Arms of the Foundling Hospital] engrav'd from the original in the collection of the Earl of Exeter / [graphic]. (0 C.E.). [Annotations (Provenance) 18th century, Proofs, Etchings England London 1747]. publisher not identified. https://collections.library.yale.edu/catalog/16194006.