Wall, J., Allen, S., Caldwell, R., & Gavilanes, T. (2012). Diction for singers: A concise reference for English, Italian, Latin, German, French, and Spanish pronunciation (Second edition.). Diction for Singers.com.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWall, Joan, Sheila Allen, Robert Caldwell, और Tracy Gavilanes. Diction for Singers: A Concise Reference for English, Italian, Latin, German, French, and Spanish Pronunciation. Second edition. Redmond, WA: Diction for Singers.com, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWall, Joan, et al. Diction for Singers: A Concise Reference for English, Italian, Latin, German, French, and Spanish Pronunciation. Second edition. Diction for Singers.com, 2012.
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