APA aipamena

(1994). Headway Pre-Intermediate: Student"s book, Workbook. Đồng Nai: Đồng Nai.

Chicago Style aipamena

Headway Pre-Intermediate: Student"s Book, Workbook. Đồng Nai: Đồng Nai, 1994.

MLA aipamena

Headway Pre-Intermediate: Student"s Book, Workbook. Đồng Nai: Đồng Nai, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.