Thiwaporn Thaweewannakij และ Sugalya Amatachaya. (2010) Balance, fall and Quality of life in regular and non-regular active elderly /. Khon Kaen University,:ม.ป.ท.Thiwaporn Thaweewannakij และ Sugalya Amatachaya. 2010. Balance, fall and Quality of life in regular and non-regular active elderly /. ม.ป.ท.:Khon Kaen University,;Thiwaporn Thaweewannakij และ Sugalya Amatachaya. Balance, fall and Quality of life in regular and non-regular active elderly /. ม.ป.ท.:Khon Kaen University, 2010. Print.