Okolo, V. N., E. I. Orji, and B. Anabaraonye. “Green Entrepreneurial Opportunities in Environmental Photography for Sustainable Development in Nigeria”. Covenant Journal of Entrepreneurship, vol. 7, no. 2, Jan. 2024, pp. 45-50, https://journals.covenantuniversity.edu.ng/index.php/cjoe/article/view/4092.