Epidemiology / 
Gordis, Leon 
 - 5th ed. 
 - Singapore :  Elsevier (Singapore) Pte. Ltd.,  2016. 
 - xv, 392 p.: ill.; 25.4 cm. 
<br/><br/>Includes answers to review questions, index 
<br/><br/><label>ISBN: </label>9789814570497 
<br/><br/><label>Dewey Class. No.: </label>C 614.403 G661 2016