APA Style

Sharpe, P, J. (2014). Barron's TOEFL iBT, 15th ed. (15th ed.). New York: Barrons Educational Series.

MLA Style

Sharpe, Pamela, J.. "Barron's TOEFL iBT, 15th ed.". 15th ed. New York: Barrons Educational Series, 2014. Text.