Hai, T. Q., & Bannan, N. Vocal traditions of the world: Towards an evolutionary account of voice production in music / Tran Quang Hai. Nicholas Bannan. Music, language, and human evolution.(2012).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hai, Tran Quang, و Nicholas Bannan. "Vocal Traditions of the World: Towards an Evolutionary Account of Voice Production in Music / Tran Quang Hai. Nicholas Bannan." Music, Language, and Human Evolution.(2012) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hai, Tran Quang, و Nicholas Bannan. "Vocal Traditions of the World: Towards an Evolutionary Account of Voice Production in Music / Tran Quang Hai. Nicholas Bannan." Music, Language, and Human Evolution.(2012), .
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.