Langan, John, 1942-
McGraw-Hill, 1992
Buku Teks
Spears, Deanne Milan
McGraw-Hill, 2000
Buku Teks
Grellet, Francoise
Cambridge University Press, 1994
Buku Referensi
Folse, Keith S.
Binarupa Aksara Press , 1993
Buku Teks
Richards, Jack C.
Cambridge University Press, 2009
Buku Teks SO