Azar, B. S., & Betty Schrampfer Azar; Lê Thành Tâm; Lê Ngọc Phương Anh. (2007). Understanding and using english grammar. Tp. Hồ Chí Minh: Trẻ.
শিকাগো স্টাইলে সাইটেশনAzar, Betty Schrampfer, এবং Betty Schrampfer Azar; Lê Thành Tâm; Lê Ngọc Phương Anh. Understanding and Using English Grammar. Tp. Hồ Chí Minh: Trẻ, 2007.
এমএলএ সাইটেশনAzar, Betty Schrampfer, এবং Betty Schrampfer Azar; Lê Thành Tâm; Lê Ngọc Phương Anh. Understanding and Using English Grammar. Tp. Hồ Chí Minh: Trẻ, 2007.
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