APA Style

Sharpe, B, E, S, P, J. (). TOEFL iBT Premium with 8 Practice Tests + Online Audio, Eighteenth Edition . : .

MLA Style

Sharpe, Barron\'s, Educational, Series,, Pamela, J.. "TOEFL iBT Premium with 8 Practice Tests + Online Audio, Eighteenth Edition". : , . [electronic resource].