Bowen, P., & Delaney, D. (2011). Champions: Student's book y workbook, level 2. Oxford University Press.
Chicago-čujuhus (17. p.)Bowen, Philippa, juo Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford: Oxford University Press, 2011.
MLA-čujuhus (9. p.)Bowen, Philippa, juo Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford University Press, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.