Melinda I. Pengaruh Reward dan Punishment Terhadap Motivasi Belajar Siswa Kelas IV A SDN Merak I pada Mata Pelajaran IPS. International j.of Elementary Education [Internet]. 2018 Jun. 29 [cited 2024 Dec. 26];2(2):81-6. Available from: https://ejournal.undiksha.ac.id/index.php/IJEE/article/view/14408