(2012). The Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill.
Chicago Style (17th ed.) CitationThe Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill, 2012.
Cita MLAThe Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.