APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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