Maohong, B. (2018). Environmental History and World History. Cherepovets State University.
Čikaški stil citiranja (17. izdanje)Maohong, Bao. Environmental History and World History. Cherepovets State University, 2018.
MLA način citiranja (9. izdanje)Maohong, Bao. Environmental History and World History. Cherepovets State University, 2018.
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