Cita APA

Zeter, J., & Pederson, M. (2008). Sharpening skills for the TOEFL iBT. Tp. HCM: Trẻ.

Chicago Style Citation

Zeter, Jeff., i Michael Pederson. Sharpening Skills for the TOEFL IBT. Tp. HCM: Trẻ, 2008.

Cita MLA

Zeter, Jeff., i Michael Pederson. Sharpening Skills for the TOEFL IBT. Tp. HCM: Trẻ, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.