MLA

Madame Katherine Sidley [Graphic]. R. Tompson excudit, 0AD. https://collections.library.yale.edu/catalog/16193390.

APA, 6th edition

Madame Katherine Sidley [graphic]. (0 C.E.). [Portrait prints, Mezzotints England London 1675, Counterproofs]. R. Tompson excudit. https://collections.library.yale.edu/catalog/16193390.