Amron Zarkasih Ritonga. “Efforts to Improve the Learning Outcomes of Students of Class VII MTs Negeri 2 Rantau Utara On Material Creative Writing Poetry Through a Strategy of Cooperative Learning Type of Jig-Saw”. International Journal Of Humanities Education and Social Sciences (IJHESS), vol. 1, no. 4, Feb. 2022, doi:10.55227/ijhess.v1i4.116.