WIBOWO, Hamid. Front matter. Jurnal Progress: Wahana Kreativitas dan Intelektualitas, [S. l.], v. 6, n. 2, 2019. DOI: 10.31942/pgrs.v6i2.2601. Disponível em: https://publikasiilmiah.unwahas.ac.id/PROGRESS/article/view/2601. Acesso em: 12 feb. 2026.