Twidwell, L. G. (1985). Hidrometallurgy. National Science Foundation.
Cita Chicago (17th ed.)Twidwell, L. G. Hidrometallurgy. Sandy City: National Science Foundation, 1985.
Cita MLA (9th ed.)Twidwell, L. G. Hidrometallurgy. National Science Foundation, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.