Gaya APA

PIERCE, D., KINSELL, S. (2009). CRACKING THE TOEFL IBT 2010 EDITION + CD (2010 ed.). New York: PRINCETON.

Gaya MLA

PIERCE, Douglas., KINSELL, Sean. "CRACKING THE TOEFL IBT 2010 EDITION + CD". 2010 ed. New York: PRINCETON, 2009. Text.