Pardiyono
Pasti bisa TOEFL : oractical strategy for the best scores
Yogyakarta : Andi Offset, 2005,
 Buku Teks
Some grammatical errors made by the students of Unpam
 Artikel Jurnal
Kaplan, Jeffrey P.
English grammar : principles and facts
Prentice Hall International, 1995
 Buku Teks SO
Poutsma, H.
Mood and tense of the English verb / H. Poutsma
P. Noordhoff, 1922
 Buku Teks SO
Yusrita Yanti
Strategi komunikasi percakapan bahasa inggris : analisis tuturan anggota english club Fakultas Sastra Universitas Bung Hatta = Communication strategies in English conversation : An analysis of utterances among English Club Members in the Faculty of Letters of Bung Hatta University
Program Pascasarjana Universitas Indonesia, 1997
 UI - Tesis Membership