Sidiq, Sahabudin, and Herawati Herawati. “Validity Test of Purchasing Power Parity Doctrine: An Indonesian Case Study”. Economic Journal of Emerging Markets 8, no. 2 (October 1, 2016): 120–127. Accessed May 7, 2024. https://jurnal.uii.ac.id/JEP/article/view/6393.