Mechanics of materials/ 
Hibbeler, R.C. 
 - 8th edition 
 - Singapore:  Pearson Education South,  2011. 
 - 866 p.: 
<br/><br/><label>ISBN: </label>9789810696856 
<br/><br/><label>Dewey Class. No.: </label>M 620.112 H533 2011