Amarawan Pentrakan และผู้แต่งคนอื่นๆ. (2022) The impact of centralized electronic bidding system on procurementprices for generic medicines: A case study from Thailand. <i>Songklanakarin Journal of Science an Technology (SJST)</i>, <i>44</i>(6), 1532-1538.Amarawan Pentrakan และผู้แต่งคนอื่นๆ. "The impact of centralized electronic bidding system on procurementprices for generic medicines: A case study from Thailand". Songklanakarin Journal of Science an Technology (SJST) 44 (2022):1532-1538.Amarawan Pentrakan และผู้แต่งคนอื่นๆ. The impact of centralized electronic bidding system on procurementprices for generic medicines: A case study from Thailand. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2022.