Cita APA (7th ed.)

Sharpe, P. J. (1999). TOEFL: How to prepare for the TOEFL (9th ed.). Barron's Educational Series.

Cita Chicago (17th ed.)

Sharpe, Pamela J. TOEFL: How to Prepare for the TOEFL. 9th ed. New York: Barron's Educational Series, 1999.

Cita MLA (9th ed.)

Sharpe, Pamela J. TOEFL: How to Prepare for the TOEFL. 9th ed. Barron's Educational Series, 1999.