Pierce, D., & Kinsell, S. (2007). Cracking the TOEFL iBT. Random House.
Chicago Style aipamenaPierce, Douglas, and Sean Kinsell. Cracking the TOEFL IBT. New York: Random House, 2007.
MLA aipamenaPierce, Douglas, and Sean Kinsell. Cracking the TOEFL IBT. Random House, 2007.
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