Mantana Meksophawannagul และผู้แต่งคนอื่นๆ. (2010) The development of an online case-based collaborative learning module for Business English Communication course. Chulalongkorn University:ม.ป.ท.Mantana Meksophawannagul และผู้แต่งคนอื่นๆ. 2010. The development of an online case-based collaborative learning module for Business English Communication course. ม.ป.ท.:Chulalongkorn University;Mantana Meksophawannagul และผู้แต่งคนอื่นๆ. The development of an online case-based collaborative learning module for Business English Communication course. ม.ป.ท.:Chulalongkorn University, 2010. Print.