Nguyễn Quốc Hùng. (1998). English in Focus Level B- dành cho giáo viên. TPHCM.
শিকাগো স্টাইলে সাইটেশনNguyễn Quốc Hùng. English in Focus Level B- Dành Cho Giáo Viên. TPHCM, 1998.
এমএলএ সাইটেশনNguyễn Quốc Hùng. English in Focus Level B- Dành Cho Giáo Viên. TPHCM, 1998.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.