Prayoon Kamkhaengkwa และผู้แต่งคนอื่นๆ. (1999) Unit cost analysis of medical education programme at Khon Kaen Medical Education Centre. Chulalongkorn University:ม.ป.ท.Prayoon Kamkhaengkwa และผู้แต่งคนอื่นๆ. 1999. Unit cost analysis of medical education programme at Khon Kaen Medical Education Centre. ม.ป.ท.:Chulalongkorn University;Prayoon Kamkhaengkwa และผู้แต่งคนอื่นๆ. Unit cost analysis of medical education programme at Khon Kaen Medical Education Centre. ม.ป.ท.:Chulalongkorn University, 1999. Print.