Giles, P. (1994). The history and technique of the counter-tenor: A study of the male high voice family. Scolar Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Giles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Hants, Eng: Scolar Press, 1994.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Giles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Scolar Press, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.