Abdul Hafizh Mohd Azam, Tamat Sarmidi, Abu Hassan Shaari Md Nor and Muhamad Rias K V Zainuddin 2020. Co-Movement among World Vegetable Oil Prices: A Wavelet-Based Analysis. International Journal of Business and Society. 21, 3 (Dec. 2020), 1068–1086. DOI:https://doi.org/10.33736/ijbs.3312.2020.