1John Clark, Marx' s Inorganic Body, Environmental Philosophy: From Animal Rights to Radical Ecology, Edited by Michael E. Zimmerman etc. , Prentice Hall, Inc. , 1993, P. 400.
2Peter Dickens, Beyond Sociology: Marxism and the Environment,The International Handbook of Environmental Sociology, edited by Michael Redclift etc., Edward Elgar, 1997.