APA aipamena

Barraclough, C. (2008). Activate B1+: Students' book. Harlow: Pearson.

Chicago Style aipamena

Barraclough, Carolyn. Activate B1+: Students' Book. Harlow: Pearson, 2008.

MLA aipamena

Barraclough, Carolyn. Activate B1+: Students' Book. Harlow: Pearson, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.