Practical English Usage
Practical English Usage is an easy-to-read English language reference guide by Michael Swan. As well as setting out the basic grammar, it answers typical vocabulary doubts that many students - and their teachers - have.
Since its first edition in 1980, it has been considered the English teachers' "bible".
- Swan, Michael. Practical English Usage. Oxford University Press ISBN 0 19 431197 X (paperback) ISBN 0 19 431198 8 (hardback)