Clegg, M. The evolution of the human vocal tract: Specialized for speech? / Margaret Clegg. Music, language, and human evolution.(2012).
Lua i Stíl Chicago (17ú heag.)Clegg, Margaret. "The Evolution of the Human Vocal Tract: Specialized for Speech? / Margaret Clegg." Music, Language, and Human Evolution.(2012) .
Lua MLA (8ú heag.)Clegg, Margaret. "The Evolution of the Human Vocal Tract: Specialized for Speech? / Margaret Clegg." Music, Language, and Human Evolution.(2012), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.