APA (7th ed.) Citation

Treworgy, J. D. (1988). The Illinois Basin: A tidally and tectonically influenced ramp during mid-Chesterian time. Illinois State Geological Survey.

Chicago Style (17th ed.) Citation

Treworgy, Janis D. The Illinois Basin: A Tidally and Tectonically Influenced Ramp During Mid-Chesterian Time. Champaign, IL: Illinois State Geological Survey, 1988.

MLA (9th ed.) Citation

Treworgy, Janis D. The Illinois Basin: A Tidally and Tectonically Influenced Ramp During Mid-Chesterian Time. Illinois State Geological Survey, 1988.