APA (7th ed.) Citation

Krey, F., & Lamar, J. E. (1925). Limestone resources of Illinois. State of Illinois, Department of Registration and Education.

Chicago Style (17th ed.) Citation

Krey, Frank, and J. E. Lamar. Limestone Resources of Illinois. Urbana, Illinois: State of Illinois, Department of Registration and Education, 1925.

MLA (9th ed.) Citation

Krey, Frank, and J. E. Lamar. Limestone Resources of Illinois. State of Illinois, Department of Registration and Education, 1925.