Goudie, A. (1993). The nature of the environment (3rd ed.). B. Blackwell.
Lua i Stíl Chicago (17ú heag.)Goudie, Andrew. The Nature of the Environment. 3rd ed. Oxford ; Cambridge, Mass.: B. Blackwell, 1993.
Lua MLA (8ú heag.)Goudie, Andrew. The Nature of the Environment. 3rd ed. B. Blackwell, 1993.
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