Abdul Malik, Ahmad Badruddin, Mary-Jane Wood, Sonia Vernanda, Gladys Putri, Ifah Shandy, Darlene Sitorus, and Delia Tamim. “Navigating the Post-ETF Paradigm: An Integrative Multi-Factor Model for Projecting Bitcoin’s 2025 Market Cycle Apex”. Enigma in Economics, Vol. 3, no. 1, Oct. 2025, pp. 50-65, doi:10.61996/economy.v3i1.91.