Park, C. C. (1986). Environmental policies: An international review. Croom Helm.
Lua i Stíl Chicago (17ú heag.)Park, Chris C. Environmental Policies: An International Review. London: Croom Helm, 1986.
Lua MLA (9ú heag.)Park, Chris C. Environmental Policies: An International Review. Croom Helm, 1986.
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