MLA

Dolfi, Emilio Mario, 1907-1975. La declamazione musicale / Emilio Mario Dolfi. Folder 1. 1923. https://collections.library.yale.edu/catalog/2112373.

APA, 6th edition

Dolfi, Emilio Mario, 1907-1975. (["Folder 1"])(1923)[La declamazione musicale / Emilio Mario Dolfi]. https://collections.library.yale.edu/catalog/2112373.