MLA

Marinetti, F. T., 1876-1944. "Stornellata Ditirambica", autograph manuscript poem, with notations and additions in the same hand. Signed at the bottom of the last page and dated Milan, Jul 1937. 11 p.. Box 55, folder 2006. 1905-1983. https://collections.library.yale.edu/catalog/10189980.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 55, folder 2006"])(1905-1983)["Stornellata Ditirambica", autograph manuscript poem, with notations and additions in the same hand. Signed at the bottom of the last page and dated Milan, Jul 1937. 11 p.]. https://collections.library.yale.edu/catalog/10189980.