Cita APA (7th ed.)

Sharpe, P. J. (2010). TOEFL iBT: Internet -based text (13th ed.). Barron's Educational Series, Inc ; Galgotia publications Pvt. Ltd.

Cita Chicago (17th ed.)

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.

Cita MLA (8th ed.)

Sharpe, Pamela J. TOEFL IBT: Internet -based Text. 13th ed. Barron's Educational Series, Inc ; Galgotia publications Pvt. Ltd, 2010.