APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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