Energy systems engineeringevaluation and implementation 
by Francis M. Vanek, Louis D. Albright 
 - 2nd ed. 
 - New York  McGraw-Hill,  2012 
<br/><br/><label>ISBN: </label>9780071787789 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Power (Mechanics) Energy conservation.