Essentials of Mastering English: A Concise Grammar is both an ideal companion for undergraduate students wishing to acquire a high level of grammatical proficiency and a readily accessible reference work for teachers of English at all levels.
The Glot International State-of-the-Article books constitute the ideal solution for everyone who wants to have a good idea of what the others are doing but does not have time to follow the developments in all other parts of the field on a day to day basis.