Christhophersen, Paul
An english phonetics course
Longmans, Green, 1956
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Fromkin, Victoria A.
An introduction to language
Holt, Rinehart and Winston, 1981
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Hayakawa, S.I.
Language in action
Harcourt, Brace, 1940
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Bloomfield, Leonard
Bahasa = Language
Dewan Bahasa dan Pustaka, 1992
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Yule, George
The study of language
Cambridge Cambridge University , 2006
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