Azar, Betty Schrampfer, 1941- Understanding and using English grammar / by Betty Schrampfer Azar. - Englewood Cliffs, N.J. : Prentice-Hall, 1981. - xvi, 400 p. : ill. ; 23 cm. Includes index. ISBN: 0139364927 Subjects--Topical Terms: English language--Textbooks for foreigners.