Asian Journal of English Language Teaching
The Chinese University Press, 1996
 Majalah, Jurnal, Buletin
English Studies
Swets & Zeitlinger B.V., 1994
 Majalah, Jurnal, Buletin
Willis, Dave
Rules, patterns and words grammar and lexis in English language teaching
Cambridge University Press, 2003
 Buku Teks
Vuoang, Tuan Duc
Colloquial Vietnamese: a complete languange course/ Tuan Duc Vuong and John More
Routledge , 1994
 Buku Teks
The Explora: Journal of English Language Teaching (ELT) and Linguistics
English Department of Magister of Education Graduate School University of HKBP Nonmensen , 2015
 Majalah, Jurnal, Buletin