APA Style

Sharpe, Pamela J.. (2007). TOEFL iBT : Internet-Based Test, 12th Edition (12). : HarperCollins.

Chicago Style

Sharpe, Pamela J.. TOEFL iBT : Internet-Based Test, 12th Edition. 12 : HarperCollins, 2007. Academic.

MLA Style

Sharpe, Pamela J.. TOEFL iBT : Internet-Based Test, 12th Edition. 12 : HarperCollins, 2007. Academic.

Turabian Style

Sharpe, Pamela J.. TOEFL iBT : Internet-Based Test, 12th Edition. 12 : HarperCollins, 2007. Academic.