APA (7th ed.) Citation

Educational Testing Service. (2012). The official guide to the TOEFL® test (4th ed., International ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Educational Testing Service. The Official Guide to the TOEFL® Test. 4th ed., International ed. New York: McGraw-Hill, 2012.

MLA (9th ed.) Citation

Educational Testing Service. The Official Guide to the TOEFL® Test. 4th ed., International ed. McGraw-Hill, 2012.

Warning: These citations may not always be 100% accurate.