Giles, P. (1994). The history and technique of the counter-tenor: A study of the male high voice family. Scolar Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিGiles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Hants, Eng: Scolar Press, 1994.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিGiles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Scolar Press, 1994.
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