and Correction of Vocal Faults. Genovex Music Group. 1994. ISBN 978-1-56593-940-0. Appelman, D. Ralph. The Science of VocalPedagogy: Theory and Application
2014,第38–44頁. Stark 2003 Giles 1982 Appelman, D. Ralph. The Science of VocalPedagogy: Theory and Application. Indiana University Press. 1986. ISBN 978-0-253-20378-6
歌唱對身體健康有正面的幫助,可以增加肺活量、降低憂鬱情緒、減輕壓力、增加免疫能力。 Appelman, Dudley Ralph. The science of vocalpedagogy: theory and application. Bloomington, IN: Indiana University Press.