Sharpe, P. J. (2010). TOEFL iBT: Internet -based text (13th ed.). Barron's Educational Series, Inc ; Galgotia publications Pvt. Ltd.
Chicago-Zitierstil (17. Ausg.)Sharpe, Pamela J. TOEFL IBT: Internet -based Text. 13th ed. Hauppauge, N.Y. : New Delhi: Barron's Educational Series, Inc ; Galgotia publications Pvt. Ltd, 2010.
MLA-Zitierstil (8. Ausg.)Sharpe, Pamela J. TOEFL IBT: Internet -based Text. 13th ed. Barron's Educational Series, Inc ; Galgotia publications Pvt. Ltd, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.