Hussain, S. M. N. A. S. M. “Keadilan Kontrak: Perspektif Bandingan Undang-Undang Kontrak Indonesia Dan Malaysia”. Journal of Malaysian and Comparative Law, vol. 19, no. 1 and 2, Jan. 2019, pp. 99-124, http://adum.um.edu.my/index.php/JMCL/article/view/16058.