Lothongkum*, A. W., N. Phaiboonsilpa, K. Seangkiatiyuth, P. Tanprasert, and S. Rojdamrongkarn. “Significant Parameters on the Deviation of Hair Conditioner Viscosity: Part I. Regression Analysis by the Minitab Program”. CURRENT APPLIED SCIENCE AND TECHNOLOGY, vol. 6, no. 2b, Mar. 2018, pp. 599-06, https://li01.tci-thaijo.org/index.php/cast/article/view/150014.