APA-viite (7. p.)

Bowen, P., & Delaney, D. (2011). Champions: Student's book y workbook, level 2. Oxford University Press.

Chicago-viite (17. p.)

Bowen, Philippa, ja Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford: Oxford University Press, 2011.

MLA-viite (9. p.)

Bowen, Philippa, ja Denis Delaney. Champions: Student's Book Y Workbook, Level 2. Oxford University Press, 2011.