Gagné, J. W. (2015). Belting: A guide to healthy, powerful singing (Audio & video access edition.). Berklee Press.
Cita Chicago Style (17a ed.)Gagné, Jeannie Wolff. Belting: A Guide to Healthy, Powerful Singing. Audio & video access edition. Boston, MA: Berklee Press, 2015.
Cita MLA (9a ed.)Gagné, Jeannie Wolff. Belting: A Guide to Healthy, Powerful Singing. Audio & video access edition. Berklee Press, 2015.
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