Lê, Bích Thủy A cross-cultural study: Politeness in issuing English and Vietnamese spoken invitations - Ho Chi Minh City University of Social sciences and Humanities (National University of Ho Chi Minh City) 2007 - 102 p. 30 cm LV 147 Subjects--Topical Terms: Tiếng Anh--Phương pháp giảng dạy Dewey Class. No.: 420.07 / C951