Sucharin Peerayanant และ Pairote Pathranarakul. (2015) Policy and strategic measures in securing welfares for aging society. National Institute of Development Administration:ม.ป.ท.Sucharin Peerayanant และ Pairote Pathranarakul. 2015. Policy and strategic measures in securing welfares for aging society. ม.ป.ท.:National Institute of Development Administration;Sucharin Peerayanant และ Pairote Pathranarakul. Policy and strategic measures in securing welfares for aging society. ม.ป.ท.:National Institute of Development Administration, 2015. Print.