MLA

family, Burney. Letters to Hester Lynch (Salusbury) Thrale Piozzi. 1779. https://collections.library.yale.edu/catalog/16670911.

APA, 6th edition

family, B. (1779). Letters to Hester Lynch (Salusbury) Thrale Piozzi. https://collections.library.yale.edu/catalog/16670911.