Rujanan Satawin และ Suthas Ratanakuakangwan. (2011) Project portfolio management system. Chulalongkorn University:ม.ป.ท.Rujanan Satawin และ Suthas Ratanakuakangwan. 2011. Project portfolio management system. ม.ป.ท.:Chulalongkorn University;Rujanan Satawin และ Suthas Ratanakuakangwan. Project portfolio management system. ม.ป.ท.:Chulalongkorn University, 2011. Print.