Okidegbe, N. (1997). Fostering sustainable development: The sector investment program. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOkidegbe, Nwanze. Fostering Sustainable Development: The Sector Investment Program. Washington, D.C.: World Bank, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOkidegbe, Nwanze. Fostering Sustainable Development: The Sector Investment Program. World Bank, 1997.
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