PRACTICAL ENGLISH USAGE - MICHAEL SWAN (OXFORD) 1984 IDIOMAS

Practical English Usage is a standard reference book aimed at foreign learners of English and their teachers, written by Michael Swan.

Published by Oxford University Press, it has sold over 2 million copies since the first edition was published in 1980.[1] A new, and greatly extended second edition was published in 1995. A third edition was released in 2005, and a fourth in 2016.