Approaches and Methods in Language Teaching by Richards & Rogers (ISBN 0521008433)
Zero Prep: Ready-to-Go Activities for The Language Classroom by Laurel Pollard and Natalie Hess (ISBN 1-882483-64-2)
Principles of Language and Teaching by H. Brown 5th ed. (ISBN 0130178160)
Language Assessment by H. Brown (ISBN 0-13-098834-0)
Understanding and Using English Grammar by Azar (ISBN 0-13-097605-9)