Sintesis dan Karakterisasi Pupuk Lepas lambat Fe-Zn dari Limbah Besi, Limbah Seng, dan Cangkang Telur Ayam. Jurnal Serambi Engineering, [S. l.], v. 9, n. 3, p. 9841–9847, 2024. Disponível em: https://jse.serambimekkah.id/index.php/jse/article/view/321. Acesso em: 29 oct. 2025.