Watchai Charunwatthana และผู้แต่งคนอื่นๆ. (2007) Measuring hospital efficiency of public hospitals under Office of Permanent Secretary of Ministry of Public Health in Thailand : a data envelopment analysis approach. Chulalongkorn University:ม.ป.ท.Watchai Charunwatthana และผู้แต่งคนอื่นๆ. 2007. Measuring hospital efficiency of public hospitals under Office of Permanent Secretary of Ministry of Public Health in Thailand : a data envelopment analysis approach. ม.ป.ท.:Chulalongkorn University;Watchai Charunwatthana และผู้แต่งคนอื่นๆ. Measuring hospital efficiency of public hospitals under Office of Permanent Secretary of Ministry of Public Health in Thailand : a data envelopment analysis approach. ม.ป.ท.:Chulalongkorn University, 2007. Print.