ธัญรัตนศรีสกุล เ. “The accuracy comparison of time series model between Winters’ exponential smoothing and Box - Jenkins methods: A case study of forecasting garden coconut price”. RMUTSB ACADEMIC JOURNAL, vol. 6, no. 2, Dec. 2018, pp. 101-13, https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/149162.