(1985). New English 900. Adapted course four. TP.HCM: Đại học Tổng hợp.
শিকাগো স্টাইলে সাইটেশনNew English 900. Adapted Course Four. TP.HCM: Đại học Tổng hợp, 1985.
এমএলএ সাইটেশনNew English 900. Adapted Course Four. TP.HCM: Đại học Tổng hợp, 1985.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.