Ridha, Nikmatur. “ Proses Penelitian, Masalah, Variabel Dan Paradigma Penelitian”. Hikmah 14, no. 1 (August 14, 2020): 62–70. Accessed January 22, 2025. https://e-jurnal.staisumatera-medan.ac.id/index.php/hikmah/article/view/18.