Sahanaya, W., & Hughes, T. (2002). IELTS preparation and practice: Practice tests with annotated answer key. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Sahanaya, Wendy, agus Terri Hughes. IELTS Preparation and Practice: Practice Tests with Annotated Answer Key. Victoria: Oxford University Press, 2002.
Lua MLA (8ú heag.)Sahanaya, Wendy, agus Terri Hughes. IELTS Preparation and Practice: Practice Tests with Annotated Answer Key. Oxford University Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.