Pattarajit Siengsawang. (2006) An investigation of needs and opinions of the academic writing in the MA/ESP program at Kasetsart University /. Kasetsart University,:ม.ป.ท.Pattarajit Siengsawang. 2006. An investigation of needs and opinions of the academic writing in the MA/ESP program at Kasetsart University /. ม.ป.ท.:Kasetsart University,;Pattarajit Siengsawang. An investigation of needs and opinions of the academic writing in the MA/ESP program at Kasetsart University /. ม.ป.ท.:Kasetsart University, 2006. Print.