APA (7th ed.) Citation

Sharpe, P. J. (2013). Toefl iBT = Internet-based test. Barron's Educational Series, Inc.

Chicago Style (17th ed.) Citation

Sharpe, Pamela J. Toefl IBT = Internet-based Test. Barron's Educational Series, Inc, 2013.

MLA (8th ed.) Citation

Sharpe, Pamela J. Toefl IBT = Internet-based Test. Barron's Educational Series, Inc, 2013.

Warning: These citations may not always be 100% accurate.