1918 Nov 14 1 p. TLS; signed also by Delia Notari; 1929 Mar 22 Telegram; signed also by Delia Notari; 1935 May 31 1 p.; 1942 Sep 10 3 p.
MLA
Marinetti, F. T., 1876-1944. 1918 Nov 14 1 p. TLS; signed also by Delia Notari; 1929 Mar 22 Telegram; signed also by Delia Notari; 1935 May 31 1 p.; 1942 Sep 10 3 p.. Box 14, folder 804. 1898-1970. https://collections.library.yale.edu/catalog/10592599.
APA, 6th edition
Marinetti, F. T., 1876-1944. (["Box 14, folder 804"])(1898-1970)[1918 Nov 14 1 p. TLS; signed also by Delia Notari; 1929 Mar 22 Telegram; signed also by Delia Notari; 1935 May 31 1 p.; 1942 Sep 10 3 p.]. https://collections.library.yale.edu/catalog/10592599.