Cite

Holograph score without words, mostly in Antheil's hand of the first four arias, with a portion of the fifth, 24 p. [i.e. 27 numb. p.] Score on p. 21-24 in ballpoint pen attributed to Gilbert Lee [1950's]

MLA

Pound, Ezra, 1885-1972. Holograph score without words, mostly in Antheil's hand of the first four arias, with a portion of the fifth, 24 p. [i.e. 27 numb. p.] Score on p. 21-24 in ballpoint pen attributed to Gilbert Lee [1950's]. Box 238, folder 14. n.d.. https://collections.library.yale.edu/catalog/2017973.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 238, folder 14"])(n.d.)[Holograph score without words, mostly in Antheil's hand of the first four arias, with a portion of the fifth, 24 p. [i.e. 27 numb. p.] Score on p. 21-24 in ballpoint pen attributed to Gilbert Lee [1950's]]. https://collections.library.yale.edu/catalog/2017973.