Patuma Choeichaiyapoom และ Chansongklod Gajaseni. (2013) EFFECTS OF ENGLISH INSTRUCTION USING INTERCULTURAL APPROACH ON INTERCULTURAL AWARENESS OF UPPER SECONDARY SCHOOL STUDENTS. Chulalongkorn University:ม.ป.ท.Patuma Choeichaiyapoom และ Chansongklod Gajaseni. 2013. EFFECTS OF ENGLISH INSTRUCTION USING INTERCULTURAL APPROACH ON INTERCULTURAL AWARENESS OF UPPER SECONDARY SCHOOL STUDENTS. ม.ป.ท.:Chulalongkorn University;Patuma Choeichaiyapoom และ Chansongklod Gajaseni. EFFECTS OF ENGLISH INSTRUCTION USING INTERCULTURAL APPROACH ON INTERCULTURAL AWARENESS OF UPPER SECONDARY SCHOOL STUDENTS. ม.ป.ท.:Chulalongkorn University, 2013. Print.