Cite

"Preparatory work," notes, autograph manuscript

MLA

Knott, Frederick. "Preparatory Work," Notes, Autograph Manuscript. 0AD. https://collections.library.yale.edu/catalog/17329950.

APA, 6th edition

Knott, F. (0 C.E.). "Preparatory work," notes, autograph manuscript [Manuscripts]. https://collections.library.yale.edu/catalog/17329950.