Cite

"Advice of the Yi-King," typescript

MLA

Butts, Mary, 1890-1937. "Advice of the Yi-King," typescript. Box 6, folder 99. n.d.. https://collections.library.yale.edu/catalog/16586541.

APA, 6th edition

Butts, Mary, 1890-1937. (["Box 6, folder 99"])(n.d.)["Advice of the Yi-King," typescript]. https://collections.library.yale.edu/catalog/16586541.