MLA

Marinetti, F. T., 1876-1944. Autograph manuscript notes for the play, accompanied by an explanation by LMB. 13 p., varying sizes. Box 34, folder 1574. 1895-1944. https://collections.library.yale.edu/catalog/17303439.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 34, folder 1574"])(1895-1944)[Autograph manuscript notes for the play, accompanied by an explanation by LMB. 13 p., varying sizes]. https://collections.library.yale.edu/catalog/17303439.