Duey, P. A. (2012). Bel canto in its golden age: A study of its teaching concepts. [Read?].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuey, Philip A. Bel Canto in Its Golden Age: A Study of Its Teaching Concepts. [Alcester?]: [Read?], 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDuey, Philip A. Bel Canto in Its Golden Age: A Study of Its Teaching Concepts. [Read?], 2012.
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