Espenido, M. I. (2007). Processing and economics of nickel laterites. The Mindanao Forum: official journal of the MSU-Iligan Institute of Technology.
Chicago Style aipamenaEspenido, Mercurio I. "Processing and Economics of Nickel Laterites." The Mindanao Forum: Official Journal of the MSU-Iligan Institute of Technology 2007.
MLA aipamenaEspenido, Mercurio I. "Processing and Economics of Nickel Laterites." The Mindanao Forum: Official Journal of the MSU-Iligan Institute of Technology, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.