Herianto, Agus, et al. “Efforts to Improve Activeness and Learning Outcomes of Integrated Social Sciences Through Time Token Type Cooperative Learning Model”. Jurnal Kependidikan: Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran Dan Pembelajaran, vol. 7, no. 3, Sept. 2021, pp. 719-28, doi:10.33394/jk.v7i3.2626.