APA (7th ed.) Citation

Educational Testing Service. (2007). The official guide to the new TOEFL iBT. McGraw-Hill.

Chicago Style (17th ed.) Citation

Educational Testing Service. The Official Guide to the New TOEFL IBT. New York: McGraw-Hill, 2007.

MLA (9th ed.) Citation

Educational Testing Service. The Official Guide to the New TOEFL IBT. McGraw-Hill, 2007.