SHEVANIA MATHELDA ARDAMIS. ANALISIS PEMBENTUKAN PORTOFOLIO OPTIMAL MENGGUNAKAN PENDEKATAN SINGLE INDEX MODEL PADA SAHAM INDEX IDXHIDEV20. CENDERAWASIH: Journal of Statistics and Data Science, [S. l.], v. 2, n. 2, 2026. Disponível em: https://ejournal.uncen.ac.id/index.php/CJSDT/article/view/5461. Acesso em: 29 apr. 2026.