Suparman, S. S., S. Kadarwati, and E. A. Purnomo. “Developing Web-Based Teaching Material Supplements To Improve Higher Order Thinking Skills (HOTs) In Mathematics Courses”. SEUNEUBOK LADA: Jurnal Ilmu-Ilmu Sejarah, Sosial, Budaya Dan Pendidikan, Vol. 7, no. 1, June 2020, pp. 118-27, doi:10.33059/jsnbl.v7i1.2363.