APA
O'Sullivan K., Lindeck J., . (2003). Focusing on IELTS. Reading and Writing Skills. Sydney: National Centre for English Language Teaching and Research.
Chicago
O'Sullivan K, Lindeck J, . 2003. Focusing on IELTS. Reading and Writing Skills. Sydney: National Centre for English Language Teaching and Research.
Harvard
O'Sullivan K., Lindeck J., . (2003). Focusing on IELTS. Reading and Writing Skills. Sydney: National Centre for English Language Teaching and Research.
MLA
O'Sullivan K, Lindeck J, . Focusing on IELTS. Reading and Writing Skills. Sydney: National Centre for English Language Teaching and Research. 2003.