Nguyễn, Thị Thanh Teachers' roles in teaching speaking skill: An investigation at An Giang - Ho Chi Minh City University of Social sciences and Humanities (National University of Ho Chi Minh City) 2008 - 128 p. 30 cm LV 196 Subjects--Topical Terms: Tiếng Anh--Phương pháp giảng dạy Dewey Class. No.: 428.3 / T253