Christhophersen, Paul
An english phonetics course
Longmans, Green, 1956
 Buku Teks
Yule, George
The study of language
Cambridge Cambridge University , 2006
 Buku Teks
Yule, George
The study of language
Cambridge University Press, 2018
 Buku Teks SO
Fromkin, Victoria A.
An introduction to language
Holt, Rinehart and Winston, 1981
 Buku Teks SO
Hayakawa, S.I.
Language in action
Harcourt, Brace, 1940
 Buku Teks SO