APA (7th ed.) Citation
Indiana Geological Survey. (1986). Environmental Study: Nr 20. State of Indiana, Dep. of Natural Resources, Geological Survey.
Chicago Style (17th ed.) Citation
Indiana Geological Survey. Environmental Study: Nr 20. Bloomington, Indiana: State of Indiana, Dep. of Natural Resources, Geological Survey, 1986.
MLA (9th ed.) Citation
Indiana Geological Survey. Environmental Study: Nr 20. State of Indiana, Dep. of Natural Resources, Geological Survey, 1986.
Warning: These citations may not always be 100% accurate.