Rahayuningsih, Sri, and Tri Astuti. 2021. “Analisis Kesalahan Siswa SMP Dalam Menyelesaikan Soal Cerita Bilangan Bulat”. Jurnal Likhitaprajna 22 (2), 133-41. https://doi.org/10.37303/likhitaprajna.v22i2.185.