Cita APA (7th ed.)

Wagner, R., & Fisher, B. D. (2002). Wagner's The ring of the Nibelung. Opera Journeys.

Cita Chicago (17th ed.)

Wagner, Richard, i Burton D. Fisher. Wagner's The Ring of the Nibelung. Coral Gables, Fla.: Opera Journeys, 2002.

Cita MLA (9th ed.)

Wagner, Richard, i Burton D. Fisher. Wagner's The Ring of the Nibelung. Opera Journeys, 2002.