?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Hamna%2C+Sukra&rft.aulast=Hamna&rft.aufirst=Sukra&rft.title=Prediksi+Harga+Penutupan+IHSG+di+Bursa+Efek+Indonesia+dengan+Model+Geometric+Brownian+Motion&rft.inst=Universitas+Negeri+padang&rft.date=May+2026&rft.degree=Bachelor%2FSkripsi