Não informado. (2001). Resources, Conservation and Recycling. Editions Elsevier.
Cita Chicago Style (17a ed.)Não informado. Resources, Conservation and Recycling. Amsterdam: Editions Elsevier, 2001.
Cita MLA (8a ed.)Não informado. Resources, Conservation and Recycling. Editions Elsevier, 2001.
Precaución: Estas citas no son 100% exactas.