Tampubolon, Bungaria, Febry Vista Kristen Tarigan, Nurfitri Humayro Daulay, and Aulia Hani. “Apple Stock Price Prediction Using Stochastic Model: A Geometric Brownian Motion Study”. Economic: Journal Economic and Business 4, no. 2 (April 23, 2025): 117–124. Accessed July 25, 2025. https://jurnal.larisma.or.id/index.php/EJEB/article/view/1004.