Dyfyniad APA

Porter, G., Brown, J. W., & Chasek, P. S. (2000). Global environmental politics (3rd ed.). Westview Press.

Dyfyniad Arddull Chicago

Porter, Gareth, Janet Welsh Brown, and Pamela S. Chasek. Global Environmental Politics. 3rd ed. Boulder, Colo: Westview Press, 2000.

Dyfyniad MLA

Porter, Gareth, et al. Global Environmental Politics. 3rd ed. Westview Press, 2000.

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