APA

Richards R. H., Locke C. E., . (1940). Textobook of ore dressing. New York: McGraw-Hill.

Chicago

Richards Robert H, Locke Charles E, . 1940. Textobook of ore dressing. New York: McGraw-Hill.

Harvard

Richards R. H., Locke C. E., . (1940). Textobook of ore dressing. New York: McGraw-Hill.

MLA

Richards Robert H, Locke Charles E, . Textobook of ore dressing. New York: McGraw-Hill. 1940.