Wannee Jamparkan และ Ratana Somrongthong. (2009) Satisfaction of the elderly people towards the Healthy and Happiness on the Buddhist Day Project in Nangam sub-district, Selaphum district, Roi-Et province, Thailand. Chulalongkorn University:ม.ป.ท.Wannee Jamparkan และ Ratana Somrongthong. 2009. Satisfaction of the elderly people towards the Healthy and Happiness on the Buddhist Day Project in Nangam sub-district, Selaphum district, Roi-Et province, Thailand. ม.ป.ท.:Chulalongkorn University;Wannee Jamparkan และ Ratana Somrongthong. Satisfaction of the elderly people towards the Healthy and Happiness on the Buddhist Day Project in Nangam sub-district, Selaphum district, Roi-Et province, Thailand. ม.ป.ท.:Chulalongkorn University, 2009. Print.