APA aipamena

Williams, G. Biology for you (New national curriculum edition for GCSE.).

Chicago Style aipamena

Williams, Gareth. Biology for You. New national curriculum edition for GCSE.

MLA aipamena

Williams, Gareth. Biology for You. New national curriculum edition for GCSE.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.