MLA

Patterns for the Newest & Most Elegant Head Dresses May 1771 / [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10715709.

APA, 6th edition

Patterns for the newest & most elegant head dresses May 1771 / [graphic]. (0 C.E.). [Fashion plates, Engravings England London 1771, Etchings England London 1771, Periodical illustrations]. publisher not identified. https://collections.library.yale.edu/catalog/10715709.