APA aipamena

Lê, H. D., & Ngũ Thiện Hùng. (2015). An investigation into linguistic features of directives in school announcements in english. ĐHĐN: ĐHĐN.

Chicago Style aipamena

Lê, Hồng Dương, và Ngũ Thiện Hùng. An Investigation Into Linguistic Features of Directives in School Announcements in English. ĐHĐN: ĐHĐN, 2015.

MLA aipamena

Lê, Hồng Dương, và Ngũ Thiện Hùng. An Investigation Into Linguistic Features of Directives in School Announcements in English. ĐHĐN: ĐHĐN, 2015.