Lua APA (7ú heag.)
Wagner, R., & Fisher, B. D. (2002). Wagner's The ring of the Nibelung. Opera Journeys.
Lua i Stíl Chicago (17ú heag.)
Wagner, Richard, agus Burton D. Fisher. Wagner's The Ring of the Nibelung. Coral Gables, Fla.: Opera Journeys, 2002.
Lua MLA (9ú heag.)
Wagner, Richard, agus Burton D. Fisher. Wagner's The Ring of the Nibelung. Opera Journeys, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.