APA (7th ed.) Citation

Geological Survey (U.S.), National Coal Resource Assessment (U.S.), Illinois State Geological Survey, Hatch, J. R., & Affolter, R. H. (2002). Resource assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin (Version 1.0.). U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), National Coal Resource Assessment (U.S.), Illinois State Geological Survey, Joseph R. Hatch, and Ronald H. Affolter. Resource Assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin. Version 1.0. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Resource Assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin. Version 1.0. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.