MLA

Marinetti, F. T., 1876-1944. n.d. La Casa Editrice Pinciana di... 1 p. Photocopied form letter; 1919 Feb 7 1 p.; 1919 Jul 11 Ticket stub; 1932 Oct 8 1 p.. Box 14, folder 820. 1898-1970. https://collections.library.yale.edu/catalog/10592600.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 14, folder 820"])(1898-1970)[n.d. La Casa Editrice Pinciana di... 1 p. Photocopied form letter; 1919 Feb 7 1 p.; 1919 Jul 11 Ticket stub; 1932 Oct 8 1 p.]. https://collections.library.yale.edu/catalog/10592600.