APA (7th ed.) Citation

Schubert, F. P., Mattulath, A., & Heinrich, M. (1911). Who is Sylvia? = Was ist Sylvia?, op.106: From "Two Gentlemen of Verona". Carl Fischer.

Chicago Style (17th ed.) Citation

Schubert, Franz Peter, Alice Mattulath, and Max Heinrich. Who Is Sylvia? = Was Ist Sylvia?, Op.106: From "Two Gentlemen of Verona". New York: Carl Fischer, 1911.

MLA (9th ed.) Citation

Schubert, Franz Peter, et al. Who Is Sylvia? = Was Ist Sylvia?, Op.106: From "Two Gentlemen of Verona". Carl Fischer, 1911.