AJI NUGROHO SUMIRAT, KUKUH. J+PLUS UNESA, [S. l.], v. 3, n. 1, 2014. Disponível em: https://ejournal.unesa.ac.id/index.php/jurnal-pendidikan-luar-sekolah/article/view/7601. Acesso em: 3 nov. 2025.