Ariyawan Khiewkumpan และ Prathurng Hongsranagon. (2012) Customers’ satisfaction toward OPD service at Somdejphraphuthalertla Hospital, Muang District, Samut Songkram province. Chulalongkorn University:ม.ป.ท.Ariyawan Khiewkumpan และ Prathurng Hongsranagon. 2012. Customers’ satisfaction toward OPD service at Somdejphraphuthalertla Hospital, Muang District, Samut Songkram province. ม.ป.ท.:Chulalongkorn University;Ariyawan Khiewkumpan และ Prathurng Hongsranagon. Customers’ satisfaction toward OPD service at Somdejphraphuthalertla Hospital, Muang District, Samut Songkram province. ม.ป.ท.:Chulalongkorn University, 2012. Print.