Department, G. (2019). Introduction to Economics. Obafemi Awolowo University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDepartment, Geography. Introduction to Economics. Obafemi Awolowo University, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDepartment, Geography. Introduction to Economics. Obafemi Awolowo University, 2019.
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