APA (7th ed.) Citation

Dressel, W. M., & Volosin, J. S. (1985). Inverted pyramid-shaped plugs for closing abandoned mine shafts: Galena, KS, demonstration project. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Dressel, W. M., and John S. Volosin. Inverted Pyramid-shaped Plugs for Closing Abandoned Mine Shafts: Galena, KS, Demonstration Project. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, 1985.

MLA (9th ed.) Citation

Dressel, W. M., and John S. Volosin. Inverted Pyramid-shaped Plugs for Closing Abandoned Mine Shafts: Galena, KS, Demonstration Project. U.S. Dept. of the Interior, Bureau of Mines, 1985.