Practical English Usage
Practical English Usage is an English usage guide written 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)