Geography, D. o. (2019). Geography of Tropics. Obafemi Awolowo University.
Čikaški stil citiranja (17. izdanje)Geography, Department of. Geography of Tropics. Obafemi Awolowo University, 2019.
MLA način citiranja (9. izdanje)Geography, Department of. Geography of Tropics. Obafemi Awolowo University, 2019.
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