Narkwichian, N., L. Tongyong, and C. Patarapanich. “Analysis of Trans Fatty Acid in Some Foods by Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy”. Journal of Health Research, vol. 23, no. 4, Nov. 2018, pp. 185-90, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/156545.