Clark, Brian. <br/><br/>
Group theatre / 
Brian Clark. 
 - London : :  Pitman Pub.,  1971. 
 - viii, 120 p. ;  23 cm. 
<br/><br/>Bibliography : p. 118-119. 
<br/><br/><label>ISBN: </label>0273315889 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Improvisation (Acting).