Puccini, Fosca (to Angelo Magrini)
MLA
Koch, Frederick R. (Frederick Robinson). Puccini, Fosca (to Angelo Magrini). Box 50, folder 1054. 1924 Nov-Dec. https://collections.library.yale.edu/catalog/16101627.
APA, 6th edition
Koch, Frederick R. (Frederick Robinson). (["Box 50, folder 1054"])(1924 Nov-Dec)[Puccini, Fosca (to Angelo Magrini)]. https://collections.library.yale.edu/catalog/16101627.