Rahman, A. H. B., Wasino, W. and Martitah, M. (2018) “Development of Social Studies Learning Module Based on Problem Based Learning with Outdoor Study to Improve Learning Outcomes of 7th Grade Junior High School Kesatrian 1 Students”, JESS (Journal of Educational Social Studies), 7(2), pp. 132-139. Available at: http://journal.unnes.ac.id./sju/jess/article/view/25982 (Accessed: 15November2024).