Gackle, L. (2011). Finding Ophelia's voice, opening Ophelia's heart: Nurturing the adolescent female voice : an exploration of the physiological, psychological, and musical development of female students. Heritage Music Press, a Lorenz Company.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিGackle, Lynne. Finding Ophelia's Voice, Opening Ophelia's Heart: Nurturing the Adolescent Female Voice : An Exploration of the Physiological, Psychological, and Musical Development of Female Students. Dayton, Ohio: Heritage Music Press, a Lorenz Company, 2011.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিGackle, Lynne. Finding Ophelia's Voice, Opening Ophelia's Heart: Nurturing the Adolescent Female Voice : An Exploration of the Physiological, Psychological, and Musical Development of Female Students. Heritage Music Press, a Lorenz Company, 2011.