Lê, Văn Thịnh Asurvey on techniques of teaching conversations in textbooks for secondary school students in Phu Yen Province - Ho Chi Minh City University of Social sciences and Humanities (National University of Ho Chi Minh City) 2012 - 135 p. 30 cm. LV 322 Subjects--Topical Terms: Tiếng Anh--Phương pháp giảng dạy Dewey Class. No.: 420.07 / S963