Firliani, Firliani, dan Nella Suciaty. “Pelatihan Metode Jarimatika Dalam Meningkatkan Kemampuan Berhitung Siswa Sekolah Dasar”. INCOME: Indonesian Journal of Community Service and Engagement 1, no. 1 (Agustus 30, 2022): 30–35. Diakses Maret 4, 2026. https://journals.eduped.org/index.php/income/article/view/19.