Cita APA (7a ed.)

Sharpe, P. J. (1989). TOEFL - How to prepare for the Test of English as a Foreign Language (6.ed.). Barron's Educational Serie, Inc.

Cita Chicago Style (17a ed.)

Sharpe, Pamela J. TOEFL - How to Prepare for the Test of English as a Foreign Language. 6.ed. New York, EUA: Barron's Educational Serie, Inc, 1989.

Cita MLA (9a ed.)

Sharpe, Pamela J. TOEFL - How to Prepare for the Test of English as a Foreign Language. 6.ed. Barron's Educational Serie, Inc, 1989.