Runge, I. C. (1998). Mining economics and strategy. Society for Mining, Metallurgy, and Exploration.
Cita Chicago (17th ed.)Runge, Ian C. Mining Economics and Strategy. Littleton, Colo.: Society for Mining, Metallurgy, and Exploration, 1998.
Cita MLA (9th ed.)Runge, Ian C. Mining Economics and Strategy. Society for Mining, Metallurgy, and Exploration, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.