APA (7th ed.) Citation

Bachman, L. J. (1984). Nitrate in the Columbia aquifer, central Delmarva Peninsula, Maryland. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Bachman, L. Joseph. Nitrate in the Columbia Aquifer, Central Delmarva Peninsula, Maryland. Towson, Maryland: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Bachman, L. Joseph. Nitrate in the Columbia Aquifer, Central Delmarva Peninsula, Maryland. U.S. Geological Survey, 1984.