Sharpe, P. J. (1994). Barron's How to Prepare for the TOEFL: Test of English as a Foreign Language (7th ed.). Barron's Educational Series.
Chicago-Zitierstil (17. Ausg.)Sharpe, Pamela J. Barron's How to Prepare for the TOEFL: Test of English as a Foreign Language. 7th ed. Hauppauge, NY: Barron's Educational Series, 1994.
MLA-Zitierstil (9. Ausg.)Sharpe, Pamela J. Barron's How to Prepare for the TOEFL: Test of English as a Foreign Language. 7th ed. Barron's Educational Series, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.