APA (7th ed.) Citation

Treworgy, J. D. (1981). Structural features in Illinois: A compendium. State Geolog. Survey Div.

Chicago Style (17th ed.) Citation

Treworgy, Janis D. Structural Features in Illinois: A Compendium. Champaign, Il: State Geolog. Survey Div, 1981.

MLA (9th ed.) Citation

Treworgy, Janis D. Structural Features in Illinois: A Compendium. State Geolog. Survey Div, 1981.

Warning: These citations may not always be 100% accurate.