Dep. Luar Negeri, 1993
Buku Teks
Institute of Southeast Asian Studies, 1992
Majalah, Jurnal, Buletin
Singapore : Institute of Southeast Asian Studies
Majalah, Jurnal, Buletin
Brunai Darussalam : Dewan Bahasa dan Pustaka
Majalah, Jurnal, Buletin
Singapore : The SEAMEO Regional English Language Centre
Majalah, Jurnal, Buletin