Sabrina, Salsabila, Tiara Fitri Rizkiyah, and Ita Friyanti. “ENGARUH HARGA POKOK PRODUKSI TERHADAP RETURN ON ASSETS (ROA) MELALUI PENJUALAN Pada PT. ULTRAJAYA MILK INDUSTRI Tbk”. Ekraf: Jurnal Ekonomi Kreatif dan Inovatif Indonesia 1, no. 2 (February 10, 2024): 130–141. Accessed June 13, 2026. https://nakiscience.com/index.php/ekraf/article/view/72.