APA (7th ed.) Citation

Sharpe, P. J. (2016). Barron's TOEFL® iBT: Internet-based test (15th edition.). Barron's.

Chicago Style (17th ed.) Citation

Sharpe, Pamela J. Barron's TOEFL® IBT: Internet-based Test. 15th edition. Hauppauge, New York: Barron's, 2016.

MLA (9th ed.) Citation

Sharpe, Pamela J. Barron's TOEFL® IBT: Internet-based Test. 15th edition. Barron's, 2016.