APA (7th ed.) Citation

Illinois Mine Subsidence Research Program & Mehnert, B. B. (1994). Subsidence investigations over a high-extraction retreat mine in Williamson County, Illinois: Final report. Illinois State Geological Survey.

Chicago Style (17th ed.) Citation

Illinois Mine Subsidence Research Program and B. B. Mehnert. Subsidence Investigations over a High-extraction Retreat Mine in Williamson County, Illinois: Final Report. Champaign, Ill.: Illinois State Geological Survey, 1994.

MLA (9th ed.) Citation

Illinois Mine Subsidence Research Program and B. B. Mehnert. Subsidence Investigations over a High-extraction Retreat Mine in Williamson County, Illinois: Final Report. Illinois State Geological Survey, 1994.