De leon, Hector S. <br/><br/>
The law on obligations and contracts / 
by Hector S. De Leon. 
 - Rev. ed. 
 - Manila :  Rex Book Store,  c1999. 
 - xxiii, 414 p. 
<br/><br/><label>ISBN: </label>971-23-2726-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obligations (Law)--Philippines