Warrack, J. H. (2001). German opera: From the beginnings to Wagner. Cambridge University Press.
Chicago-čujuhus (17. p.)Warrack, John Hamilton. German Opera: From the Beginnings to Wagner. Cambridge ; New York: Cambridge University Press, 2001.
MLA-čujuhus (9. p.)Warrack, John Hamilton. German Opera: From the Beginnings to Wagner. Cambridge University Press, 2001.
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