Holt, Rinehart and Winston, 1990
Buku Teks
Fromkin, Victoria A., author
Holt, Rinehart and Winston, 1981
Buku Teks
edited by Ralph Fasold and Jeff Connor-Linton
Cambridge University Press, 2006
Buku Teks
Bloomfield, Leonard, author
Dewan Bahasa dan Pustaka, 1992
Buku Teks
Yule, George, author
Cambridge Cambridge University , 2006
Buku Teks