APA (7th ed.) Citation

Bradfield, A. D., & Porter, S. D. (1990). Summary of biological investigations relating to surface-water quality in the Kentucky River basin, Kentucky. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Bradfield, Arthur D., and Stephen D. Porter. Summary of Biological Investigations Relating to Surface-water Quality in the Kentucky River Basin, Kentucky. Louisville, Kentucky: Department of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Bradfield, Arthur D., and Stephen D. Porter. Summary of Biological Investigations Relating to Surface-water Quality in the Kentucky River Basin, Kentucky. Department of the Interior, U.S. Geological Survey, 1990.