Cita APA (7th ed.)

Wagner, R. (1957). Siegfried. Philipp Reclam jun..

Cita Chicago (17th ed.)

Wagner, Richard. Siegfried. Leipzig: Philipp Reclam jun., 1957.

Cita MLA (8th ed.)

Wagner, Richard. Siegfried. Philipp Reclam jun., 1957.