Ahmad Monir Abdullah and Abul Mansur Mohammed Masih (2016) “Diversification in Crude Oil and Other Commodities: A Comparative Analysis”, Asian Academy of Management Journal of Accounting and Finance, 12(1), pp. 101–128. Available at: https://ejournal.usm.my/aamjaf/article/view/aamjaf_vol12-no1-2016_5 (Accessed: 7 February 2026).