1. Free, M. L., & Moats, M. S. (2014). Hydrometallurgy. In S. Seetharaman (Ed.), Treatise on process metallurgy. Vol. 3, Industrial process, Part A (pp. 949–982). Oxford: Elsevier. (Chapter 2.7).
2. Habashi, F. (1970). Principles of extractive metallurgy, Vol. 2, Hydrometallurgy. New York: Gordon & Breach. (Chapter 2).
3. Newton, J. (1967). Extractive metallurgy. London: Wiley Eastern. (Chapter 7).
4. Dennis, W. H. (1954). Metallurgy of non-ferrous metals. London: Pitman. (Chapter 8).
5. Davenport, W. G., King, M., Schlesinger, M., & Biswas, A. K. (2002). Extractive metallurgy of copper (4th ed.). Oxford: Elsevier Science Ltd. (Chapters 17 and 18).