Bibliography

• EF - English Files 2www.oup.com/elt
• EV - English Vocabulary in Use (pre-inter. & inter.)
• EG - English Grammar in Use (inter.)
• HW - Headway (inter.) www.oup.com/elt/headway
• EB - Master the basics www.barronseduc.com
• NEST - New English self-taught (Новый самоучитель)