MLA

Mrs. B-Tt Admiral P-e. [Graphic]. Published by A. Hamilton Junr. near St. Johns Gate, 0AD. https://collections.library.yale.edu/catalog/10723394.

APA, 6th edition

Mrs. B-tt Admiral P-e. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Stipple engravings England London 1780, Engravings England London 1780, Etchings England London 1780]. Published by A. Hamilton Junr. near St. Johns Gate. https://collections.library.yale.edu/catalog/10723394.