Azar, Betty Schrampfer 1941-.
Understanding and using English grammar /
Betty Schrampfer Azar 
. - 3rd edition 
. - [New York] : Longman,  1999 
. - xvi, 437, 30, 8 p.  ill., tab.  25 cм. 
<br/><br/> У книзі штамп.
<br/><label>  ISBN: </label>0-13-958661-X