Reference

1
Cassell's Students' English Grammar by Jake Allsop
Cassell's Students' English Grammar
by Jake Allsop
2
HTML and CSS by Jon Duckett
3
English Grammar in Use Supplementary Exercises With answers by Louise Hashemi, Raymond Murphy
4
English Vocabulary in Use Pre-intermediate and Intermediate by Stuart Redman
5
Test Your Grammar and Usage by Jake Allsop, Peter Watcyn-Jones
6
English Pronunciation in Use Advanced Book with Answers, 5 Audio CDs and CD-ROM by Martin Hewings
7
Advanced Grammar in Use With CD ROM by Martin Hewings
8
Grundstufen-Grammatik by Monika Reimann
9
How to Write a Lot by Paul J. Silvia
10
The Stories of Slang by Jonathon Green