CAMBRIDGE IELTS 13 ACADEMIC: ACADEMIC STUDENT'S BOOK WITH ANSWERS: : AUTHENTIC EXAMINATION PAPERS

CAMBRIDGE IELTS 11: GENERAL TRAINING STUDENT'S BOOK WITH ANSWERS: AUTHENTIC EXAMINATION PAPERS

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

CAMBRIDGE IELTS 15 GENERAL TRAINING STUDENT'S BOOK WITH ANSWERS: AUTHENTIC PRACTICE TESTS

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

CAMBRIDGE IELTS 17 GENERAL TRAINING: STUDENT'S BOOK WITH ANSWERS AND AUDIO AND RESOURCE BANK

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

IELTS 18 GENERAL TRAINING: STUDENT'S BOOK WITH ANSWERS AND AUDIO AND RESOURCE BANK(AUTHENTIC PRACTIC

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

IELTS 19 (ACADEMIC): STUDENT'S BOOK WITH ANSWERS WITH AUDIO WITH RESOURCE BANK

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

IELTS 19 (GENERAL TRAINING): STUDENT'S BOOK WITH ANSWERS WITH AUDIO WITH RESOURCE BANK

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

GRAMMAR FOR IELTS (COLLINS ENGLISH FOR EXAMS) (AUDIO AVAILABLE ONLINE)

ผู้แต่ง : FIONA AISH et al.

LONGMAN PREPARATION SERIES FOR THE TOEIC TEST: LISTENING AND READING (INTRODUCTION) (WITH ANSWER KEY

ผู้แต่ง : LIN LOUGHEED

CAMBRIDGE IELTS 13 GENERAL TRAINING: AUTHENTIC EXAMINATION PAPERS (STUDENT'S BOOK WITH ANSWERS)

THE OFFICIAL CAMBRIDGE GUIDE TO IELTS (STUDENT'S BOOK WITH ANSWERS) (1 BK./1 DVD)

ผู้แต่ง : PAULINE CULLEN et al.

CAMBRIDGE IELTS 15 ACADEMIC STUDENTS BOOK WITH ANSWERS: AUTHENTIC PRACTICE TESTS

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.

เทคนิคเตรียมตัวสอบ IELTS SPEAKING

ผู้แต่ง : อนุสร ดีรักษา

CAMBRIDGE IELTS 17 ACADEMIC: STUDENT'S BOOK WITH ANSWERS AND AUDIO AND RESOURCE BANK

ผู้แต่ง : CAMBRIDGE UNIVERSITY PRESS.