Jelaskan Rujukan dari Konsonan klik dalam bahasa melayu

Ladefoged, Peter. 1968. A phonetic study of West African languages: An auditory-instrumental survey. Cambridge University Press, 2nd edition. ISBN 0-521-06963-7

Amanda Miller, Levi Namaseb, Khalil Iskarous. 2003. Tongue Body constriction differences in click types.

Traill, Anthony & Rainer Vossen. 1997. Sound change in the Khoisan languages: new data on click loss and click replacement. J African Languages and Linguistics 18:21-56.