APA (7th ed.) Citation

Rogers, B., & Kenny, N. (2016). The complete guide to IELTS. Cengage Learning.

Chicago Style (17th ed.) Citation

Rogers, Bruce, and Nick Kenny. The Complete Guide to IELTS. Hampshire, England: Cengage Learning, 2016.

MLA (9th ed.) Citation

Rogers, Bruce, and Nick Kenny. The Complete Guide to IELTS. Cengage Learning, 2016.