Basic Technical English. Student's Book
Basic Technical English: Teacher's Book
Effective Meetings. Student Book
Effective Negotiating. Student's Book
Effective Negotiating. Teacher's Book
Effective Presentations. Student's Book
Effective Presentations. Teacher's Book
Effective Socializing. Student Book
Effective Socializing. Teacher's Book
Effective Telephoning. Student Book
Effective Telephoning. Teacher's Book