Aprina, Hilda. “ANALISIS PENGARUH HARGA CRUDE PALM OIL (CPO) DUNIA TERHADAP NILAI TUKAR RIIL RUPIAH”. Buletin Ekonomi Moneter dan Perbankan 16, no. 4 (October 27, 2014): 315-338. Accessed August 12, 2020. https://www.bmeb-bi.org/index.php/BEMP/article/view/15.