Bilingual visual dictionary
How do you say it in English? : memilih ungkapan yang tepat dalam berbahasa Inggris
Kamus lengkap Indonesia-Inggris
The Cambridge guide to pedagogy and practice in second language teaching
The Cambridge guide to second language assessment
Academic encounters, human behavior, 4 :listening, speaking
Academic encounters, life in society, level 3 :listening and speaking
Academic encounters, life in society, level 3 :reading and writing
Academic encounters, human behavior, level 4 :reading and writing
Assesing grammar