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).
Lua i Stíl Chicago (17ú heag.)Hai, Tran Quang, agus 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) .
Lua MLA (8ú heag.)Hai, Tran Quang, agus 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), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.