A. Putlack, M., & Link, W. (2008). How to master skills for the Toefl iBT: Intermediate. Tp. Hồ Chí Minh: Tổng hợp Tp. Hồ Chí Minh.
استشهاد بنمط شيكاغوA. Putlack, Michael, و Will Link. How to Master Skills for the Toefl IBT: Intermediate. Tp. Hồ Chí Minh: Tổng hợp Tp. Hồ Chí Minh, 2008.
MLA استشهادA. Putlack, Michael, و Will Link. How to Master Skills for the Toefl IBT: Intermediate. Tp. Hồ Chí Minh: Tổng hợp Tp. Hồ Chí Minh, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.