V. C. Nnodu, M. E. Obiegbu, and P. S. U. Eneche. “An Assessment of Sustainable Energy-Efficient Strategies for Retrofitted Building Development in Abuja, Nigeria”. Archives of Current Research International 9, no. 1 (August 9, 2017): 1–12. Accessed October 16, 2025. https://www.journalacri.com/index.php/ACRI/article/view/135.