Bacalla, Nemia P. <br/><br/>Tuklas Lahi 4  Serye sa Araling Panlipunan  -- Quezon City,  Brilliant Creations Publishing, Inc.,  2015. <br/><br/><label>ISBN: </label>978-621-8006-17-1 <br/><br/><label>Dewey Class. No.: </label>GSL TB 910 B12 2015