Eckholm, E. P. (1982). Down to earth: Environment and human needs. East-west Press.
Style de citation Chicago (17e éd.)Eckholm, Erik P. Down to Earth: Environment and Human Needs. East-west Press, 1982.
Style de citation MLA (9e éd.)Eckholm, Erik P. Down to Earth: Environment and Human Needs. East-west Press, 1982.
Attention : ces citations peuvent ne pas être correctes à 100%.