APA

Watkins F. A., Heisel J. E., . (1970). Electrical-analog-model study of water resources of the Columbus area, Bartholomew county, Indiana. Washington, D.C: U.S. Gov. Print. Off.

Chicago

Watkins Frank A, Heisel J E, . 1970. Electrical-analog-model study of water resources of the Columbus area, Bartholomew county, Indiana. Washington, D.C: U.S. Gov. Print. Off.

Harvard

Watkins F. A., Heisel J. E., . (1970). Electrical-analog-model study of water resources of the Columbus area, Bartholomew county, Indiana. Washington, D.C: U.S. Gov. Print. Off.

MLA

Watkins Frank A, Heisel J E, . Electrical-analog-model study of water resources of the Columbus area, Bartholomew county, Indiana. Washington, D.C: U.S. Gov. Print. Off. 1970.