Djeni, Darwin, Tutus Zamania, and Indah Siti Nor Hasanah. “Pemodelan Matematika Terhadap Keuntungan Harian Pada Penjualan Jajanan Dikafe Nihayah Pondok Putri Pesantren Zainul Hasan”. BAHTSUNA: Jurnal Penelitian Pendidikan Islam 3, no. 1 (April 9, 2021): 58–70. Accessed July 5, 2024. https://lp3mzh.id/index.php/bahtsuna/article/view/36.