Azar, Betty Schrampfer Understanding and using English grammar : Betty Schrampfer Azar. Coaut. Stacy A. Hagen - 4a. - USA : Pearson, 2009 - xiii, 525 p. Ils. ; 25 cm. Incluye ėndice ISBN: 0132464500 Subjects--Topical Terms: Inglčs --Grāmatica LC Class. No.: P1128 / A93 2009