Lua APA (7ú heag.)
Wallace, M. E., & Wallace, R. (1979). Opera scenes for class and stage. Southern Illinois University Press.
Lua i Stíl Chicago (17ú heag.)
Wallace, Mary Elaine, agus Robert Wallace. Opera Scenes for Class and Stage. Carbondale: Southern Illinois University Press, 1979.
Lua MLA (9ú heag.)
Wallace, Mary Elaine, agus Robert Wallace. Opera Scenes for Class and Stage. Southern Illinois University Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.