Coe, Graham
Colloquial English
Routledge & Kegan Paul, 2005
 Multimedia
Coe, Graham
Colloquial English
Routledge & Kegan Paul, 2005
 Multimedia
Nasr, Raja T.
Teaching and learning english : selected and simplified readings
Longman, 1975
 Buku Teks SO
Reflections on english language teaching : vol. 1
Foreword by Wong Lian Aik
Center for English Language Communication. NUS, 2001
 Buku Teks SO
English language teaching today : linking theory and practice /​ Willy A. Renandya, Handoyo Puji Widodo, editors.
Springer, 2016
 Buku Teks SO