[digital vocal score] La Wally

MLA

Catalani, Alfredo, Luigi Illica, and Wilhelmine Von Hillern. [digital Vocal Score] La Wally. Milan: Ricordi, .d.

APA

Catalani, A., Illica, L., & Von Hillern, W. (.d). [digital vocal score] La Wally. Milan: Ricordi.

Chicago

Catalani, Alfredo, Luigi Illica, and Wilhelmine Von Hillern. [digital Vocal Score] La Wally. Milan: Ricordi, .d.