JONI KOPTER; ADE PARLAUNGAN NASUTION; MUHAMMAD ALI AL IHSAN. PENGARUH TANGGUNG JAWAB KERJA, LINGKUNGAN KERJA NON FISIK DAN KEPUASAN KERJA TERHADAP PRODUKTIVITAS KERJA PEGAWAI DI SATUAN POLISI PAMONG PRAJA KABUPATEN LABUHANBATU. JOEL: Journal of Educational and Language Research, [S. l.], v. 1, n. 11, p. 1583–1596, 2022. DOI: 10.53625/joel.v1i11.2700. Disponível em: https://mail.bajangjournal.com/index.php/JOEL/article/view/2700. Acesso em: 5 jul. 2025.