Bowen, P., & Delaney, D. (2011). Champions: Student's book y workbook, level 2. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Bowen, Philippa, agus Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford: Oxford University Press, 2011.
Lua MLA (9ú heag.)Bowen, Philippa, agus Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford University Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.