APA (7th ed.) Citation

Garbutt, M., & O'Sullivan, K. (1996). IELTS practice tests: Michael Garbutt & Kerry O'Sullivan (Updated ed.). National Centre for English Language Teaching and Research, Macquarie University.

Chicago Style (17th ed.) Citation

Garbutt, Michael, and Kerry O'Sullivan. IELTS Practice Tests: Michael Garbutt & Kerry O'Sullivan. Updated ed. Sydney: National Centre for English Language Teaching and Research, Macquarie University, 1996.

MLA (8th ed.) Citation

Garbutt, Michael, and Kerry O'Sullivan. IELTS Practice Tests: Michael Garbutt & Kerry O'Sullivan. Updated ed. National Centre for English Language Teaching and Research, Macquarie University, 1996.

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