Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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