Jamalludin, N., A. Md. Hashim, and A. A. Zalay @ Zali. “Customer Choice of Colour Elements in Relation To Physical Product Appearance”. KUPAS SENI: Jurnal Seni Dan Pendidikan Seni, vol. 2, May 2019, https://ojs.upsi.edu.my/index.php/JSPS/article/view/2231.