Putri, Charista, Mutia Nur Estri, Indra Herdiana, & Idha Sihwaningrum. "A FORECASTING OF RUPIAH EXCHANGE RATE TO US DOLLAR BY USING MARKOV CHAIN AND CHENG METHODS." Proceeding ICMA-SURE [Online], (2025): 169-181. Web. 25 May. 2026