APA (7th ed.) Citation

Milton J. James, Bell H. Huw, & Neville P. Peter. (20). IELTS. Practice Tests 2: Class CDs. Newbury, Express Publishing, [20--].

Chicago Style (17th ed.) Citation

Milton J. James, Bell H. Huw, and Neville P. Peter. IELTS. Practice Tests 2: Class CDs. Newbury, Express Publishing, [20--], 20.

MLA (9th ed.) Citation

Milton J. James, et al. IELTS. Practice Tests 2: Class CDs. Newbury, Express Publishing, [20--], 20.