APA (7th ed.) Citation

Bell, A. H., & Cohee, G. V. (1942). Oil and gas development in Illinois in 1941. Illinois State Geological Survey.

Chicago Style (17th ed.) Citation

Bell, A. H., and George Vincent Cohee. Oil and Gas Development in Illinois in 1941. Urbana: Illinois State Geological Survey, 1942.

MLA (9th ed.) Citation

Bell, A. H., and George Vincent Cohee. Oil and Gas Development in Illinois in 1941. Illinois State Geological Survey, 1942.