APA (7th ed.) Citation

Rühl, O., Allen, S. A., & Holt, S. P. (1949). Zinc-lead ore reserves of the Tri-State district, Missouri-Kansas-Oklahoma. U.S. Department of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Rühl, Otto, Simeon A. Allen, and Stephen P. Holt. Zinc-lead Ore Reserves of the Tri-State District, Missouri-Kansas-Oklahoma. [Washington, D.C.]: U.S. Department of the Interior, Bureau of Mines, 1949.

MLA (9th ed.) Citation

Rühl, Otto, et al. Zinc-lead Ore Reserves of the Tri-State District, Missouri-Kansas-Oklahoma. U.S. Department of the Interior, Bureau of Mines, 1949.