Newlyn, W.T.. <br/><br/>
Theory of Money /  

 - Third Ed. /  
 - Oxford OX2 6DP :   Oxford University University Press. 
 - p.204 :  
<br/><br/><label>ISBN: </label>0-19-877100-8 
<br/><br/><label>Dewey Class. No.: </label>X61  / L8;1