Labrague, Carmen L. <br/><br/>Pagsisiyasat 2  Sibika at Kultura  -- Quezon City:  Ibon Books,  2011. <br/><br/><label>ISBN: </label>971-0483-67-9 <br/><br/><label>Dewey Class. No.: </label>GSL TB 910 L114 2011