Marlina, Leni. “Peningkatan Pemahaman Siswa Dalam Pelajaran Matematika Pokok Bahasan Bangun Datar Melalui Media Konkrit: Improving Student’s Understanding In Mathematics Lessons Of Building Up Flat Through Concrete Media”. Suluh: Jurnal Bimbingan dan Konseling 7, no. 2 (March 31, 2022): 20–24. Accessed June 21, 2025. https://ojs.umpr.ac.id/suluh/article/view/3392.