Hasyim, A., and D. Nastiti. “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”. Journal of Islamic and Muhammadiyah Studies, vol. 3, Aug. 2022, p. 10.21070/jims.v3i0.1556, doi:10.21070/jims.v3i0.1556.