Cunningham, S. (2001). Cutting edge: Student's Book. Harlow: Pearson education.
Chicago Style aipamenaCunningham, Sarah. Cutting Edge: Student's Book. Harlow: Pearson education, 2001.
MLA aipamenaCunningham, Sarah. Cutting Edge: Student's Book. Harlow: Pearson education, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.