Girindrawardana, A., K. Kamid, and N. Nazarudin. “Meningkatkan HOTS Peserta Didik SMPN 22 Tanjab Timur Menggunakan Model Problem Based Learning: Improving HOTS of SMPN 22 Tanjab Timur Students Using Problem Based Learning Model”. Edu-Sains: Jurnal Pendidikan Matematika Dan Ilmu Pengetahuan Alam, vol. 11, no. 2, July 2022, pp. 12-21, doi:10.22437/jmpmipa.v11i2.10509.