Ulfa, Lutfianah, et al. “Pengaruh Gaya Kepemimpinan, Motivasi, Disiplin Kerja, Budaya Organisasi Dan Stres Kerja Terhadap Kinerja Karyawan PD BKK Brebes”. Journal of Economic and Management (JECMA), vol. 1, no. 1, Feb. 2019, pp. 41-52, https://jurnal.umus.ac.id/index.php/jecma/article/view/914.