United Nations Environment Programme, Gajraj, A. M., & V�u, A. (1986). Recycling and recovery in the metals industry. United Nations Environmental Programme.
Style de citation Chicago (17e éd.)United Nations Environment Programme, A. Melville Gajraj, et Anh-Tu��an V�u. Recycling and Recovery in the Metals Industry. Paris: United Nations Environmental Programme, 1986.
Style de citation MLA (9e éd.)United Nations Environment Programme, et al. Recycling and Recovery in the Metals Industry. United Nations Environmental Programme, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.