AYUBA, I. G. U. (2009). Essentials of population studies in urban and regional planning practice. Umahi Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
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