Working Meeting of the Polar Bear Specialist Group. Polar bears. IUCN.
Style de citation Chicago (17e éd.)Working Meeting of the Polar Bear Specialist Group. Polar Bears. s.l.: IUCN.
Style de citation MLA (9e éd.)Working Meeting of the Polar Bear Specialist Group. Polar Bears. IUCN.
Attention : ces citations peuvent ne pas être correctes à 100%.