MLA

E. H. (Eliza Hayley), -1797. [Letters : Eliza (Ball) Hayley to William Hayley]. Box 6901-7000 | Folder 6913. 1789 October 8, 11, 14. https://collections.library.yale.edu/catalog/11873942.

APA, 6th edition

E. H. (Eliza Hayley), -1797. (["Box 6901-7000 | Folder 6913"])(1789 October 8, 11, 14)[[Letters : Eliza (Ball) Hayley to William Hayley]]. https://collections.library.yale.edu/catalog/11873942.