APA (7th ed.) Citation

Sharpe, P. J. (2006). Pass key to the TOEFL iBT: Test of English as a foreign language ; internet-based test (6. ed.). Barron's Educational Series.

Chicago Style (17th ed.) Citation

Sharpe, Pamela J. Pass Key to the TOEFL IBT: Test of English as a Foreign Language ; Internet-based Test. 6. ed. Hauppauge, NY: Barron's Educational Series, 2006.

MLA (9th ed.) Citation

Sharpe, Pamela J. Pass Key to the TOEFL IBT: Test of English as a Foreign Language ; Internet-based Test. 6. ed. Barron's Educational Series, 2006.