Zangger Borch, D. (2007). Daniel Zanggers Borch's Ultimate vocal voyage: The definite method for unleashing the rock, pop or soul singer within you (Ed. 1.). Notfabriken.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZangger Borch, Daniel. Daniel Zanggers Borch's Ultimate Vocal Voyage: The Definite Method for Unleashing the Rock, Pop or Soul Singer Within You. Ed. 1. Bromma, Sweden: Notfabriken, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZangger Borch, Daniel. Daniel Zanggers Borch's Ultimate Vocal Voyage: The Definite Method for Unleashing the Rock, Pop or Soul Singer Within You. Ed. 1. Notfabriken, 2007.
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