HIDAYAT, T. P. The Influence of Communication, Work Discipline and Work Environment on Employee Performance at PT. PLN (Persero) South Medan Customer Service Unit (ULP). Jurnal Sains dan Teknologi, [S. l.], v. 5, n. 1, p. 313–319, 2023. Disponível em: https://ejournal.sisfokomtek.org/index.php/saintek/article/view/1619. Acesso em: 21 may. 2026.