Naddhaporn Kammasorn และ Kanchana Prapphal. (2008) The use of the web-based C-test (WBCT) as an English placement test for Rajamangala University of Technology Tawan-Ok and an investigation of test-takers strategies. Chulalongkorn University:ม.ป.ท.Naddhaporn Kammasorn และ Kanchana Prapphal. 2008. The use of the web-based C-test (WBCT) as an English placement test for Rajamangala University of Technology Tawan-Ok and an investigation of test-takers strategies. ม.ป.ท.:Chulalongkorn University;Naddhaporn Kammasorn และ Kanchana Prapphal. The use of the web-based C-test (WBCT) as an English placement test for Rajamangala University of Technology Tawan-Ok and an investigation of test-takers strategies. ม.ป.ท.:Chulalongkorn University, 2008. Print.