Hasyim A, Nastiti D. The Relationship Between Self-Regulation and Academic Procrastination in Grades 7 & 8 Students of Muhammadiyah 8 Middle School Tanggulangin: Hubungan Antara Regulasi Diri dengan Prokrastinasi Akademik pada Siswa Kelas 7 & 8 Sekolah Menengah Pertama Muhammadiyah 8 Tanggulangin. jims [Internet]. 2022 Aug. 29 [cited 2025 Aug. 31];3:10.21070/jims.v3i0.1556. Available from: https://jims.umsida.ac.id/index.php/jims/article/view/1556