Working Meeting of Seal Specialists on Treatened and Depleted Seals of the world. (1973). Seals. IUCN.
Style de citation Chicago (17e éd.)Working Meeting of Seal Specialists on Treatened and Depleted Seals of the world. Seals. Morges: IUCN, 1973.
Style de citation MLA (9e éd.)Working Meeting of Seal Specialists on Treatened and Depleted Seals of the world. Seals. IUCN, 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.