Sugden, Robert <br/><br/>
The principles of practical cost-benefit analysis / 
Robert Sugden and Alan Williams 
 - Oxford :  Oxford University Press,  1978 
 - xii, 275 p. :  ill. ;  24 cm. 
<br/><br/>References : p. 265-269 
<br/><br/><label>ISBN: </label>0198770413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cost effectiveness