Putlack, M. A., Link, W., & Poirier, S. (2008). How to master skills for the TOEFL iBT: Writing : Intermediate. Tp.HCM: Tổng hợp.
Chicago Style CitationPutlack, Micheal A., Will Link, i Stephen Poirier. How to Master Skills for the TOEFL IBT: Writing : Intermediate. Tp.HCM: Tổng hợp, 2008.
Cita MLAPutlack, Micheal A., Will Link, i Stephen Poirier. How to Master Skills for the TOEFL IBT: Writing : Intermediate. Tp.HCM: Tổng hợp, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.