IRAWAN, Florian Indra Kusuma; SANJAYA, I Putu Sugiartha. PORTOFOLIO OPTIMAL MODEL MARKOWITZ SAHAM IDX ESG LEADERS DALAM TERANG LAUDATO SI’ . KRISNA: Kumpulan Riset Akuntansi, [S. l.], v. 16, n. 2, p. 198–208, 2025. DOI: 10.22225/kr.16.2.2025.198-208. Disponível em: https://www.ejournal.warmadewa.ac.id/index.php/krisna/article/view/10149. Acesso em: 16 jan. 2026.