L. Leonardo, D. K. . Walanda, M. Napitupulu, and P. . Ningsih, “Nickel Extraction from Morowali Laterite Ore with Chloride Acid (HCl) – Nitric Acid (HNO3) Solution”, J. Akademika Kimia, vol. 13, no. 1, pp. 1-6, Jun. 2025.