Cita APA (7th ed.)

Sahanaya, W., & Hughes, T. (2002). IELTS preparation and practice: Practice test with annotated answer key. Oxford University press.

Cita Chicago (17th ed.)

Sahanaya, Wendy, i Terri Hughes. IELTS Preparation and Practice: Practice Test with Annotated Answer Key. Oxford: Oxford University press, 2002.

Cita MLA (8th ed.)

Sahanaya, Wendy, i Terri Hughes. IELTS Preparation and Practice: Practice Test with Annotated Answer Key. Oxford University press, 2002.