Peckham, A. (2010). The contemporary singer: Elements of vocal technique (2nd edition.). Berklee Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPeckham, Anne. The Contemporary Singer: Elements of Vocal Technique. 2nd edition. Boston, MA, USA: Berklee Press, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPeckham, Anne. The Contemporary Singer: Elements of Vocal Technique. 2nd edition. Berklee Press, 2010.
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