Malam, Bashir, and Abubakar Ibrahim Jalo. “Global Challenges on Environmental Sustainability: A Reflection on Policies and Applications”. The International Journal of Humanities & Social Studies 8, no. 10 (October 31, 2020). Accessed May 18, 2024. http://internationaljournalcorner.com/index.php/theijhss/article/view/156089.