APA aipamena

Peter Riley. (2005). Checkpoint Biology Pupil's Book (Checkpoint Science). "Trans-Atlantic Publications, Inc.".

Chicago Style aipamena

Peter Riley. Checkpoint Biology Pupil's Book (Checkpoint Science). "Trans-Atlantic Publications, Inc.", 2005.

MLA aipamena

Peter Riley. Checkpoint Biology Pupil's Book (Checkpoint Science). "Trans-Atlantic Publications, Inc.", 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.