Hewings, Martin. Advanced Grammar In Use : a reference and practice book for advanced learners of English : without answers / Martin Hewings. - Cambridge : Cambridge University Press, 1999. - ix, 299 p. : ill. ; 25 cm. Includes index. ISBN: 0521498686 (with answers) 0521498694 (pbk.) : Subjects--Topical Terms: English languageEnglish language--Grammar LC Class. No.: PE1128 Dewey Class. No.: 428.24