[digital vocal score] Carmen : opera in four acts

MLA

Bizet, Georges, et al. [digital Vocal Score] Carmen : Opera In Four Acts. New York: Schirmer, 1923.

APA

Bizet, G., Halévy, L., Meilhac, H., & Mérimée, P. (1923). [digital vocal score] Carmen : opera in four acts. New York: Schirmer.

Chicago

Bizet, Georges, Ludovic Halévy, Henri Meilhac, and Prosper Mérimée. [digital Vocal Score] Carmen: Opera In Four Acts. New York: Schirmer, 1923.