APA-Zitierstil (7. Ausg.)

Wagner, R. (1999). The Rhine gold: The ring forged : documentary on Wagner's opera. NPS.

Chicago-Zitierstil (17. Ausg.)

Wagner, Richard. The Rhine Gold: The Ring Forged : Documentary on Wagner's Opera. [Place of publication not identified]: NPS, 1999.

MLA-Zitierstil (9. Ausg.)

Wagner, Richard. The Rhine Gold: The Ring Forged : Documentary on Wagner's Opera. NPS, 1999.