APA
O'Connor H. G., . (1971). Geology and ground-water resources of Johnson County, Northeastern Kansas. Kansas: University of Kansas Publications.
Chicago
O'Connor Howard G, . 1971. Geology and ground-water resources of Johnson County, Northeastern Kansas. Kansas: University of Kansas Publications.
Harvard
O'Connor H. G., . (1971). Geology and ground-water resources of Johnson County, Northeastern Kansas. Kansas: University of Kansas Publications.
MLA
O'Connor Howard G, . Geology and ground-water resources of Johnson County, Northeastern Kansas. Kansas: University of Kansas Publications. 1971.