Gaya APA

Sharpe, P, J. (2012). Barron's TOEFL IBT (The Leader in Test Preparation) (13th Edition) (edisi 13). : .

Gaya MLA

Sharpe, Pamela, J.. "Barron's TOEFL IBT (The Leader in Test Preparation) (13th Edition)". edisi 13 : , 2012. Text.