APA aipamena

Dave Willis. (1998). Collins Cobuild basic grammar. London: HarperCollins.

Chicago Style aipamena

Dave Willis. Collins Cobuild Basic Grammar. London: HarperCollins, 1998.

MLA aipamena

Dave Willis. Collins Cobuild Basic Grammar. London: HarperCollins, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.