Oswald, Ian. <br/><br/>
Sleep / 
By Ian Oswald. 
 - 3rd ed. 
 - Harmondsworth :  Penguin,  1974. 
 - 163 p. :  ill. ;  19 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography : p. 154-159. 
<br/><br/><label>ISBN: </label>0140207430 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sleep.