Cite

A Set of Grand Lessons for the Harpsichord or Piano-Forte....

MLA

Relfe, J. (John), 1763-approximately 1837. A Set of Grand Lessons for the Harpsichord or Piano-Forte..... Box 683. Undated. https://collections.library.yale.edu/catalog/11237293.

APA, 6th edition

Relfe, J. (John), 1763-approximately 1837. (["Box 683"])(Undated)[A Set of Grand Lessons for the Harpsichord or Piano-Forte....]. https://collections.library.yale.edu/catalog/11237293.