นุชาชาติพงศ์ อาภรณ์, and ปิ่นมณี ปรัชญา. “The Test of Granger Causality Between the Prices of Oil and Gold or Gold Products”. Siam University Journal of Business Administration 16, no. 26 (April 20, 2022): 74–88. accessed June 25, 2025. https://so07.tci-thaijo.org/index.php/sujba/article/view/906.