Chathaya Wongrathanandha และ Worawet Suwanrada. (2011) Factors affecting the demand for formal long-term care of elderly : a case study in the municipality of muang district, Pathum Thani Province. Chulalongkorn University:ม.ป.ท.Chathaya Wongrathanandha และ Worawet Suwanrada. 2011. Factors affecting the demand for formal long-term care of elderly : a case study in the municipality of muang district, Pathum Thani Province. ม.ป.ท.:Chulalongkorn University;Chathaya Wongrathanandha และ Worawet Suwanrada. Factors affecting the demand for formal long-term care of elderly : a case study in the municipality of muang district, Pathum Thani Province. ม.ป.ท.:Chulalongkorn University, 2011. Print.