MLA

Puccini, Giacomo, 1858-1924. Puccini, Albina Magi. Box 29, folder 6. [1882 February 24]. https://collections.library.yale.edu/catalog/2032699.

APA, 6th edition

Puccini, Giacomo, 1858-1924. (["Box 29, folder 6"])([1882 February 24])[Puccini, Albina Magi]. https://collections.library.yale.edu/catalog/2032699.