Gagné, J. W. (2015). Belting: A guide to healthy, powerful singing (Audio & video access edition.). Berklee Press.
Citazione stile Chigago Style (17a edizione)Gagné, Jeannie Wolff. Belting: A Guide to Healthy, Powerful Singing. Audio & video access edition. Boston, MA: Berklee Press, 2015.
Citatione MLA (9a ed.)Gagné, Jeannie Wolff. Belting: A Guide to Healthy, Powerful Singing. Audio & video access edition. Berklee Press, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.