(2012). SUSTAINABLE environmental management in Nigeria. Book Builders.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSUSTAINABLE Environmental Management in Nigeria. Book Builders, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSUSTAINABLE Environmental Management in Nigeria. Book Builders, 2012.
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