Mekhael, Elie, and Jinan Karameh. “Measuring Grade 10 students’ Knowledge, Skills and Attitudes of Sustainable Development”. International Journal of Learning and Teaching 10, no. 3 (July 28, 2018): 269–291. Accessed April 30, 2024. https://un-pub.eu/ojs/index.php/ijlt/article/view/1032.