Não informado. (1981). Environmental Education and Information. University of Salford.
Style de citation Chicago (17e éd.)Não informado. Environmental Education and Information. Salford, Inglaterra: University of Salford, 1981.
Style de citation MLA (8e éd.)Não informado. Environmental Education and Information. University of Salford, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.