Bramer, George R.
Writing for readers
Charles E. Merrill Publishing Company, 1981
 Buku Teks
Harris, Muriel
Prentice hall reference guide to grammar and usage : with exercises
Prentice-Hall, 1997
 Buku Referensi
Hewings, Martin
Advanced grammar in Use : a self-study reference and practice book for advanced studentss of english with answers
Cambridge University Press, 2006
 Buku Teks
Muhibbin Syah
Cara mudah menerapkan Engglish grammar : kaidah & pelatihan untuk rujukan belajar sendiri
RajaGrafindo Persada, 2010
 Buku Teks
Trimmer, Joseph F.
Writing with a purpose
Houghton Mifflin , 1995
 Buku Teks SO