Ang daigdig 
Zaide, Gregorio F. 
 - revised edition. 
 -  National Book Store.  1985 
 - vii, 277 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71081080-4 
<br/><br/><label>Dewey Class. No.: </label>F 900 Za1 1985