Gultom, S. (2017) “The Effect of Problem Based Learning Strategic and Divergent Thinking Style on The Ability to Solve Environmental The Problems (an Experimental Study at SMP Negeri 161 Jakarta, 2015)”, IJEEM - Indonesian Journal of Environmental Education and Management, 1(2), pp. 66–82. Available at: https://journal.unj.ac.id/unj/index.php/ijeem/article/view/3701 (Accessed: 22 November 2024).