Titze, I. R. (2010). Fascinations with the human voice. NCVS, National Center for Voice and Speech.
Lua i Stíl Chicago (17ú heag.)Titze, Ingo R. Fascinations with the Human Voice. Salt Lake City, Utah: NCVS, National Center for Voice and Speech, 2010.
Lua MLA (9ú heag.)Titze, Ingo R. Fascinations with the Human Voice. NCVS, National Center for Voice and Speech, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.