Cite

Puccini, Elvira (to Angelo Magrini)

MLA

Koch, Frederick R. (Frederick Robinson). Puccini, Elvira (to Angelo Magrini). Box 50, folder 1052. 1923-24. https://collections.library.yale.edu/catalog/16101625.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 50, folder 1052"])(1923-24)[Puccini, Elvira (to Angelo Magrini)]. https://collections.library.yale.edu/catalog/16101625.