Benson, Beverly.
Improving the grammar of written English: the editing process /
Beverly Benson, Patricia Byrd 
. - Boston  : Heinle & Heinle Publishers,  1989 
. - xiii, 255 p.   28 cm. 
 - (Wadsworth English for academic purposes series )
<br/><label>  ISBN: </label>0-534-09654-9