Jessop, H. L., & Phan Quế Liên. (2009). iBT TOEFL: A practical guide. Tp. HCM: Tổng hợp.
Chicago Style CitationJessop, Howard Lynn., i Phan Quế Liên. IBT TOEFL: A Practical Guide. Tp. HCM: Tổng hợp, 2009.
Cita MLAJessop, Howard Lynn., i Phan Quế Liên. IBT TOEFL: A Practical Guide. Tp. HCM: Tổng hợp, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.