APA aipamena

HarperCollins. (1991). Collins COBUILD English guides. 1, Prepositions. HarperCollins.

Chicago Style aipamena

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. London: HarperCollins, 1991.

MLA aipamena

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. HarperCollins, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.