Principples of tourism / 
Cruz, Zenaida L. 
 - rev. ed. 
 - Manila :  Rex Book Store,  2006. 
 - vi,285p.; 22.2cm. 
<br/><br/>Includes glossary, appendices, index 
<br/><br/><label>ISBN: </label>9789712346187 
<br/><br/><label>Dewey Class. No.: </label>Fil 3334.4 C955 2006