Cita APA (7a ed.)

Richards, R. H. Ore dressing / by Robert H. Richards, S. B. professor of Mining Engineering and Metallurgy at the Massachusetts Institute of Technology, Boston, Mass., U. S. A (Second edition.).

Cita Chicago Style (17a ed.)

Richards, Robert Hallowell. Ore Dressing / by Robert H. Richards, S. B. Professor of Mining Engineering and Metallurgy at the Massachusetts Institute of Technology, Boston, Mass., U. S. A. Second edition. New York and London : The engineering and mining journal, 1906.

Cita MLA (8a ed.)

Richards, Robert Hallowell. Ore Dressing / by Robert H. Richards, S. B. Professor of Mining Engineering and Metallurgy at the Massachusetts Institute of Technology, Boston, Mass., U. S. A. Second edition.