Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sahanaya, Wendy, και Terri Hughes. IELTS Preparation and Practice: Practice Tests with Annotated Answer Key. Victoria: Oxford University Press, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Sahanaya, Wendy, και Terri Hughes. IELTS Preparation and Practice: Practice Tests with Annotated Answer Key. Oxford University Press, 2002.