APA-viite

Nancy,K Hetzel. (1980). Environmental cooperation among industrialized countries: The role of regional organizations. University Press of America,Inc.

Chicago-tyylinen lähdeviittaus

Nancy,K Hetzel. Environmental Cooperation Among Industrialized Countries: The Role of Regional Organizations. Washington: University Press of America,Inc, 1980.

MLA-viite

Nancy,K Hetzel. Environmental Cooperation Among Industrialized Countries: The Role of Regional Organizations. University Press of America,Inc, 1980.

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