APA (7th ed.) Citation

O'Connell, S., & O'Connell, S. (2003). Focus on IELTS (2. impression.). Longman.

Chicago Style (17th ed.) Citation

O'Connell, Sue, and Sue O'Connell. Focus on IELTS. 2. impression. Harlow: Longman, 2003.

MLA (9th ed.) Citation

O'Connell, Sue, and Sue O'Connell. Focus on IELTS. 2. impression. Longman, 2003.