Putlack, M. A., Link, W., & Poirier, S. (2008). How to master skills for the TOEFL iBT: Speaking : Intermediate. Tp.HCM: Tổng hợp.
استشهاد بنمط شيكاغوPutlack, Micheal A., Will Link, و Stephen Poirier. How to Master Skills for the TOEFL IBT: Speaking : Intermediate. Tp.HCM: Tổng hợp, 2008.
MLA استشهادPutlack, Micheal A., Will Link, و Stephen Poirier. How to Master Skills for the TOEFL IBT: Speaking : Intermediate. Tp.HCM: Tổng hợp, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.