Easy IELTS = International English Language Testing System: mudah memahami dan mengerjakan tes ielts dan raih skor keseluruhan minimal 8
A concise introduction to English morphology and syntax
English from Radio Australia : Bahasa Inggris lewat radio Australia
Ujian dan pembahasab TOEFL : structure and written expression
Essential linguistics : what you need to know to teach reading, ESL, spelling, phonics, and grammar
Tenses vocabulary and conversation for nursing
IELTS killer : cara pasti mendapat skor IELTS 7.0