Nelson, J. (2017). The voice exercise book: A guide to healthy and effective voice use. National Theatre Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNelson, Jeannette. The Voice Exercise Book: A Guide to Healthy and Effective Voice Use. London: National Theatre Publishing, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNelson, Jeannette. The Voice Exercise Book: A Guide to Healthy and Effective Voice Use. National Theatre Publishing, 2017.
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