Zahran, Ariq, Beny Rahim, and Rion Nofrianda. 2025. “PENGARUH HARDINESS TERHADAP WORK ENGAGEMENT PADA KARYAWAN PT. TELKOM INDONESIA WITEL JAMBI: THE EFFECT OF HARDINESS ON WORK ENGAGEMENT IN OUTSOURCING EMPLOYEES OF PT TELKOM INDONESIA WITEL JAMBI”. Jurnal Psikologi Jambi 9 (2):9-17. https://online-journal.unja.ac.id/jpj/article/view/41079.