Pochanee Nuktong และ Chansongklod Gajaseni. (2010) The effects of drama-based instruction on English oral communication ability and motivation in learning English of eleventh grade students. Chulalongkorn University:ม.ป.ท.Pochanee Nuktong และ Chansongklod Gajaseni. 2010. The effects of drama-based instruction on English oral communication ability and motivation in learning English of eleventh grade students. ม.ป.ท.:Chulalongkorn University;Pochanee Nuktong และ Chansongklod Gajaseni. The effects of drama-based instruction on English oral communication ability and motivation in learning English of eleventh grade students. ม.ป.ท.:Chulalongkorn University, 2010. Print.