Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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