Permata, D., S. Slameto, and E. H. Radia. “Implementation of Cooperative Learning Model Type Jigsaw in Social Science to Increase students’ Learning Outcome”. Jurnal Pendidikan Dan Pengajaran, vol. 51, no. 3, Oct. 2018, pp. 138-44, doi:10.23887/jpp.v51i3.15926.