Fisher, J., & Kayes, G. (2018). This is a voice: 99 exercises to train, project and harness the power of your voice. Wellcome Collection.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFisher, Jeremy, और Gillyanne Kayes. This Is a Voice: 99 Exercises to Train, Project and Harness the Power of Your Voice. London: Wellcome Collection, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFisher, Jeremy, और Gillyanne Kayes. This Is a Voice: 99 Exercises to Train, Project and Harness the Power of Your Voice. Wellcome Collection, 2018.
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