UTAMA, Dicky Ferlian; RUSDI, Zainnur M. The Influence of Ethical Environment on Employee Performance with Optimism as a Mediator. Economics and Digital Business Review, [S. l.], v. 6, n. 1, p. 663–673, 2025. DOI: 10.37531/ecotal.v6i1.2258. Disponível em: https://ojs.stieamkop.ac.id/index.php/ecotal/article/view/2258. Acesso em: 25 mar. 2026.