Koestler, Arthur. <br/><br/>
The call girls :  a tragi-comedy / 
Arthur Koestler. 
 - 1st American ed. 
 - New York :  Random House,  1973. 
 - 167 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0394484355 
<br/><br/><label>LCCN: </label>7210283