Dugeri, T., Y. Gambo, and C. Ajayi. “Internalising Internationa Valuation Standards: Relevance and Applicability Issues in the Nigerian Context”. ATBU Journal of Environmental Technology, vol. 5, no. 1, Apr. 2013, pp. 100-16, https://www.ajol.info/index.php/atbu/article/view/87072.