Padua, Roberto N., Ph.D <br/><br/>Fundamentals of Educational Research and Data Analysis  -- Quezon City:  KATHA Publishing Co, Inc,  1998. <br/><br/> References <br/><br/><label>ISBN: </label>971574012X <br/><br/><label>Dewey Class. No.: </label>Cir 370.1 P13 1998