(2009). New toeic 4n4 (Four weeks for weakness): 620 level. Thành phố Hồ Chí Minh: Tổng hợp Thành phố Hồ Chí Minh.
শিকাগো স্টাইলে সাইটেশনNew Toeic 4n4 (Four Weeks for Weakness): 620 Level. Thành phố Hồ Chí Minh: Tổng hợp Thành phố Hồ Chí Minh, 2009.
এমএলএ সাইটেশনNew Toeic 4n4 (Four Weeks for Weakness): 620 Level. Thành phố Hồ Chí Minh: Tổng hợp Thành phố Hồ Chí Minh, 2009.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.