Regional Conference of the North-West Europe Committee, 9a. (1972). Environmental education in an urban society. IUCN.
Style de citation Chicago (17e éd.)Regional Conference of the North-West Europe Committee, 9a. Environmental Education in an Urban Society. Morges: IUCN, 1972.
Style de citation MLA (9e éd.)Regional Conference of the North-West Europe Committee, 9a. Environmental Education in an Urban Society. IUCN, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.