Focus on Grammar 3 (4th Edition)
Great Writing 4: Great Essays (Great Writing, New Edition)
Introduction to Academic Writing, Third Edition (The Longman Academic Writing Series, Level 3)
Breaking Through
Q: Skills for Success Listening and Speaking 2E Level 4 Student Book (Q Skills for Success, Level 4)
Grammar in Context 2
Understanding and Using English Grammar, 4th Edition (Book & Audio CD)
Contemporary Topics 2: Academic Listening and Note-Taking Skills, 3rd Edition
Clear Speech: Pronunciation and Listening Comprehension in North American English, 4th Edition
Focus on Pronunciation 3 (3rd Edition)