AGUNG, W. S.; WANDEBORI, H.; SIRAIT, S. R. Strategic Diversification and Core Competence in a Mid-Sized Construction Firm. Jurnal Relevansi : Ekonomi, Manajemen dan Bisnis, [S. l.], v. 10, n. 1, p. 39–57, 2026. DOI: 10.61401/relevansi.v10i1.376. Disponível em: https://jurnal.stiekrakatau.ac.id/index.php/relevansi/article/view/376. Acesso em: 16 jun. 2026.