Cita APA (7th ed.)

Petzoldt, R. (1946). Zauber der Operette. Musikedition Europaton.

Cita Chicago (17th ed.)

Petzoldt, Richard. Zauber Der Operette. Leipzig: Musikedition Europaton, 1946.

Cita MLA (8th ed.)

Petzoldt, Richard. Zauber Der Operette. Musikedition Europaton, 1946.