Sharpe, P. J. (2006). Barron's how to prepare for the Toefl iBT: Test of English as a foreign language: Internet - Based test. Thành phố Hồ Chí Minh: Trẻ.
Citação norma ChicagoSharpe, Pamela J. Barron's How to Prepare for the Toefl IBT: Test of English As a Foreign Language: Internet - Based Test. Thành phố Hồ Chí Minh: Trẻ, 2006.
Citação norma MLASharpe, Pamela J. Barron's How to Prepare for the Toefl IBT: Test of English As a Foreign Language: Internet - Based Test. Thành phố Hồ Chí Minh: Trẻ, 2006.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.