“Pengembangan Perangkat Pembelajaran Matematika Model Pembelajaran Berbasis Masalah untuk Meningkatkan Kualitas Proses dan Hasil Belajar di SMP: Developing of Mathematics Learning Devices with Problem Based Learning Model to Improve Process Quality and Learning Outcomes of Junior High School” (2019) Talenta Conference Series: Science and Technology (ST), 2(2). doi:10.32734/st.v2i2.544.