APA (7th ed.) Citation

Gough, C., & Hutchison, S. (2015). IELTS 2: Exam essentials practice tests. Cengage Learning.

Chicago Style (17th ed.) Citation

Gough, Chris, and Susan Hutchison. IELTS 2: Exam Essentials Practice Tests. Hampshire, United Kingdom: Cengage Learning, 2015.

MLA (9th ed.) Citation

Gough, Chris, and Susan Hutchison. IELTS 2: Exam Essentials Practice Tests. Cengage Learning, 2015.