Angsana Chuchuay และ Wimontip Musikaphan. (2013) Family factors and their influence toward the elderly left behind in Thailand. Mahidol University:ม.ป.ท.Angsana Chuchuay และ Wimontip Musikaphan. 2013. Family factors and their influence toward the elderly left behind in Thailand. ม.ป.ท.:Mahidol University;Angsana Chuchuay และ Wimontip Musikaphan. Family factors and their influence toward the elderly left behind in Thailand. ม.ป.ท.:Mahidol University, 2013. Print.