Lim, Romeo D. <br/><br/>Understanding Travel & Tours Essentials  -- Revised ed.  -- Intramuros, Manila:  Mindshapers Co., Inc.,  2017. <br/><br/><label>ISBN: </label>9786214061334 <br/><br/><label>Dewey Class. No.: </label>GS Res 338.47 L7321 2017