Gaya APA

Barron's : TOEFL iBT (Internet-Based-Test) 13th ed.. (2010). New York: Barron\'s Educational Series, Inc..

Gaya MLA

Barron's : TOEFL iBT (Internet-Based-Test) 13th ed.. 13th ed.. New York: Barron\'s Educational Series, Inc., 2010. Text.