Apa Youngpradith. (2004) A causal model of promoting leisure-time physical activity among middle-aged Thai women. Mahidol University,:ม.ป.ท.Apa Youngpradith. 2004. A causal model of promoting leisure-time physical activity among middle-aged Thai women. ม.ป.ท.:Mahidol University,;Apa Youngpradith. A causal model of promoting leisure-time physical activity among middle-aged Thai women. ม.ป.ท.:Mahidol University, 2004. Print.