APA (7th ed.) Citation

Richards, R. H., & Locke, C. E. (1940). Textbook of ore dressing (3a. ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Richards, Robert H., and Charles E. Locke. Textbook of Ore Dressing. 3a. ed. Nueva York: McGraw-Hill, 1940.

MLA (9th ed.) Citation

Richards, Robert H., and Charles E. Locke. Textbook of Ore Dressing. 3a. ed. McGraw-Hill, 1940.