Schmidt-Bleek, F., & Wiegandt, K. (2009). The Earth: Natural resources and human intervention. Haus Pub..
Čikaški stil citiranja (17. izdanje)Schmidt-Bleek, F., i Klaus Wiegandt. The Earth: Natural Resources and Human Intervention. London: Haus Pub., 2009.
MLA način citiranja (9. izdanje)Schmidt-Bleek, F., i Klaus Wiegandt. The Earth: Natural Resources and Human Intervention. Haus Pub., 2009.
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