Agung WS, Wandebori H, Sirait SR. Strategic Diversification and Core Competence in a Mid-Sized Construction Firm. JR [Internet]. 2 Juni 2026 [dikutip 16 Juni 2026];10(1):39-57. Tersedia pada: https://jurnal.stiekrakatau.ac.id/index.php/relevansi/article/view/376