(Camilla de la Bedoyere). (2019). Egg to Penguin Lifecycles. QED Publishing.
Chicago-čujuhus (17. p.)(Camilla de la Bedoyere). Egg to Penguin Lifecycles. QED Publishing, 2019.
MLA-čujuhus (9. p.)(Camilla de la Bedoyere). Egg to Penguin Lifecycles. QED Publishing, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.