Willis, Dave, author
Cambridge University Press, 2003
Buku Teks
Beason, Larry, author
Bredfors/ St. Martins, 2003
Buku Teks
Parrot, Martin, author
Cambridge University Press, 2003
Buku Teks
Greenbaum, Sidney
Longman , 1990
Buku Teks
Maftuchah Jusuf, author
N.V. Harapan Masa, 1962
Buku Teks