Gardner, Martin. <br/><br/>
Further mathematical diversions :  the paradox of the unexpected hanging and others / 
 The paradox of the unexpected hanging and others. 
Martin Gardner. 
 - London :  George Allen &Unwin Ltd.,  1970. 
 - 255 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0047930152 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical diversion.