R. Amalia and M. Ramli, “Upaya Meningkatkan Hasil Belajar IPS Ekonomi Menggunakan Model Pembelajaran Kooperatif Tipe Co-Op Co-Op pada Kelas VIII IPS-2 SMP Islam Nurul Ihsan Palangka Raya: Efforts to Improve Social Sciences Learning Outcomes Using Co-Op Co-Op Cooperative Learning Model in Class VIII IPS-2 Nurul Ihsan Islamic Middle School Palangka Raya”, Neraca J Pendidikan Ekonomi, vol. 4, no. 2, pp. 41–47, Apr. 2019.