ANGGRAINI, N.; HASIBUAN, A. D. Reducing Student Tardiness Through Group Guidance With Behavior Contract Technique: Mengurangi Keterlambatan Siswa Melalui Bimbingan Kelompok Dengan Teknik Kontrak Perilaku. Indonesian Journal of Innovation Studies, [S. l.], v. 26, n. 3, p. 10.21070/ijins.v26i3.1509, 2025. DOI: 10.21070/ijins.v26i3.1509. Disponível em: https://ijins.umsida.ac.id/index.php/ijins/article/view/1509. Acesso em: 5 dec. 2025.