APA (7th ed.) Citation

Langer, W. H., & Glanzman, V. M. (1993). Natural aggregate: Building America's future. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Langer, William H., and V. M. Glanzman. Natural Aggregate: Building America's Future. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 1993.

MLA (9th ed.) Citation

Langer, William H., and V. M. Glanzman. Natural Aggregate: Building America's Future. U.S. Department of the Interior, U.S. Geological Survey, 1993.