Hewings, Martin
Advanced grammar in use : a reference and practice book for advanced students of english
Cambridge University Press, 2005
 Buku Teks SO
Muhibbin Syah
Cara mudah menerapkan Engglish grammar : kaidah & pelatihan untuk rujukan belajar sendiri
RajaGrafindo Persada, 2010
 Buku Teks SO
McCarthy, Michael
English vocabulary in use : upper-intermediate & advanced
Erlangga, 2002
 Buku Teks SO
Azar, Betty Schrampfer, 1941-
Basic english grammar
Prentice Hall Regents, 1995
 Buku Teks SO
Azar, Betty Schrampfer, 1941-
Understanding and using English grammar
Prentice Hall Regents, 1989
 Buku Referensi