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.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)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.
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