APA (7th ed.) Citation

Hren, J., Wilson, K. S., & Helsel, D. R. (1984). A statistical approach to evaluate the relation of coal mining, land reclamation, and surface-water quality in Ohio. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hren, Janet, Karen S. Wilson, and Dennis R. Helsel. A Statistical Approach to Evaluate the Relation of Coal Mining, Land Reclamation, and Surface-water Quality in Ohio. Columbus, Ohio: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Hren, Janet, et al. A Statistical Approach to Evaluate the Relation of Coal Mining, Land Reclamation, and Surface-water Quality in Ohio. U.S. Geological Survey, 1984.