APA-čujuhus (7. p.)
Wallace, M. E., & Wallace, R. (1979). Opera scenes for class and stage. Southern Illinois University Press.
Chicago-čujuhus (17. p.)
Wallace, Mary Elaine, juo Robert Wallace. Opera Scenes for Class and Stage. Carbondale: Southern Illinois University Press, 1979.
MLA-čujuhus (9. p.)
Wallace, Mary Elaine, juo Robert Wallace. Opera Scenes for Class and Stage. Southern Illinois University Press, 1979.
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