Kemp, D. D. (1994). Global environmental issues: A climatological approach (2nd ed.). Routledge.
Lua i Stíl Chicago (17ú heag.)Kemp, David D. Global Environmental Issues: A Climatological Approach. 2nd ed. London ; New York: Routledge, 1994.
Lua MLA (9ú heag.)Kemp, David D. Global Environmental Issues: A Climatological Approach. 2nd ed. Routledge, 1994.
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