APA ציטוט

Nguyễn Quốc Hùng. (1998). English in Focus Level B workbook. TPHCM.

Trích dẫn kiểu Chicago

Nguyễn Quốc Hùng. English in Focus Level B Workbook. TPHCM, 1998.

ציטוט MLA

Nguyễn Quốc Hùng. English in Focus Level B Workbook. TPHCM, 1998.