Parichart Kumcheen และ Sucharat Rimkeeratikul. (2009) Behaviors to obtain knowledge of Backward design :. Thammasat University:ม.ป.ท.Parichart Kumcheen และ Sucharat Rimkeeratikul. 2009. Behaviors to obtain knowledge of Backward design :. ม.ป.ท.:Thammasat University;Parichart Kumcheen และ Sucharat Rimkeeratikul. Behaviors to obtain knowledge of Backward design :. ม.ป.ท.:Thammasat University, 2009. Print.