Cite

Typed text numbered: Letter no 4 Torino 8/12/35. [7645-1]

MLA

Marinetti, F. T., 1876-1944. Typed text numbered: Letter no 4 Torino 8/12/35. [7645-1]. box 96, slide 65. 1935. https://collections.library.yale.edu/catalog/10660919.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 96, slide 65"])(1935)[Typed text numbered: Letter no 4 Torino 8/12/35. [7645-1]]. https://collections.library.yale.edu/catalog/10660919.