Siahaan, M., and P. Wibowo. “PENGARUH KEPRIBADIAN TANGGUH (HARDINESS) TERHADAP RESILIENSI NARAPIDANA NARKOTIKA DI LEMBAGA PEMASYARAKATAN KELAS IIB LUBUK PAKAM”. Journal of Management : Small and Medium Enterprises (SMEs), Vol. 17, no. 1 - May, June 2024, pp. 231-43, https://ejurnal.undana.ac.id/index.php/JEM/article/view/12962.