Portnoy, Kenneth. <br/><br/>
Screen adaptation:  a scriptwriting handbook/ 
Kenneth Portnoy. 
 - London:  Focal Press,  1991. 
 - xv, 157p.: 
<br/><br/> includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0240800958 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Broadcasting.--Aurthorship.<br/>Motion Pictures.--Authorship.
<br/><br/><label>Dewey Class. No.: </label>808.23