APA (7th ed.) Citation

United States. National Park Service. & Illinois. Department of Natural Resources. (1998). Illinois & Michigan Canal State Trail. National Park Service?.

Chicago Style (17th ed.) Citation

United States. National Park Service., and Illinois. Department of Natural Resources. Illinois & Michigan Canal State Trail. [Washington, D.C.]: National Park Service?, 1998.

MLA (8th ed.) Citation

United States. National Park Service., and Illinois. Department of Natural Resources. Illinois & Michigan Canal State Trail. National Park Service?, 1998.