Pangaribuan J. ANALISIS EFISIENSI PENENTUAN PORTOFOLIO SAHAM PERUSAHAAN MANUFAKTUR DI PT. BURSA EFEK INDONESIA (BEI). JMB [Internet]. 2017 Dec. 13 [cited 2026 Sep. 3];12(2):38-56. Available from: https://ejournal.ust.ac.id/JIMB_ekonomi/article/view/58