Suparuthai Sumonwiriya และ Jutarat Vibulphol. (2007) A comparison of out-of-class English language learning activities, learning strategies, and attitudes towards autonomous English language learning of English program and regular program students in secondary schools. Chulalongkorn University:ม.ป.ท.Suparuthai Sumonwiriya และ Jutarat Vibulphol. 2007. A comparison of out-of-class English language learning activities, learning strategies, and attitudes towards autonomous English language learning of English program and regular program students in secondary schools. ม.ป.ท.:Chulalongkorn University;Suparuthai Sumonwiriya และ Jutarat Vibulphol. A comparison of out-of-class English language learning activities, learning strategies, and attitudes towards autonomous English language learning of English program and regular program students in secondary schools. ม.ป.ท.:Chulalongkorn University, 2007. Print.