APA (7th ed.) Citation

Services, E. T. (2012). The official guide to the toefl: Test. McGraw Hill.

Chicago Style (17th ed.) Citation

Services, Educational Testing. The Official Guide to the Toefl: Test. McGraw Hill, 2012.

MLA (8th ed.) Citation

Services, Educational Testing. The Official Guide to the Toefl: Test. McGraw Hill, 2012.

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