Sharpe, P. J., & Pamela J. Sharpe. (2006). Barron's how to prepare for the Toefl iBT: Test of English as a foreign language Internet-based test. Nxb Trẻ.
シカゴスタイル引用形Sharpe, Pamela J., , Pamela J. Sharpe. Barron's How to Prepare for the Toefl IBT: Test of English As a Foreign Language Internet-based Test. Nxb Trẻ, 2006.
MLA引用形式Sharpe, Pamela J., , Pamela J. Sharpe. Barron's How to Prepare for the Toefl IBT: Test of English As a Foreign Language Internet-based Test. Nxb Trẻ, 2006.
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