S. A. Himawati, I. N. . Aini, and A. Warmi, “Description Of Mathematic Problem Solving Ability for Class X Senior High School Students Based On Polya Steps: Deskripsi Kemampuan Pemecahan Masalah Matematis Siswa SMA Kelas X Berdasarkan Langkah-Langkah Polya”, Mathline, vol. 6, no. 2, pp. 191–206, Oct. 2021.