(Camilla de la Bedoyere). (2019). Egg to Penguin Lifecycles. QED Publishing.
Chicago Style aipamena(Camilla de la Bedoyere). Egg to Penguin Lifecycles. QED Publishing, 2019.
MLA aipamena(Camilla de la Bedoyere). Egg to Penguin Lifecycles. QED Publishing, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.