Setaphat Yenyuak และ Pattarasinee Bhattarakosol. (2008) Risk management in software purchasing : an empirical study of Thai's company. Chulalongkorn University:ม.ป.ท.Setaphat Yenyuak และ Pattarasinee Bhattarakosol. 2008. Risk management in software purchasing : an empirical study of Thai's company. ม.ป.ท.:Chulalongkorn University;Setaphat Yenyuak และ Pattarasinee Bhattarakosol. Risk management in software purchasing : an empirical study of Thai's company. ม.ป.ท.:Chulalongkorn University, 2008. Print.