Ladefoged, P., & Maddieson, I. (1996). The sounds of the world's languages. Blackwell Publishers.
Lua i Stíl Chicago (17ú heag.)Ladefoged, Peter, agus Ian Maddieson. The Sounds of the World's Languages. Oxford: Blackwell Publishers, 1996.
Lua MLA (9ú heag.)Ladefoged, Peter, agus Ian Maddieson. The Sounds of the World's Languages. Blackwell Publishers, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.