APA (7th ed.) Citation

Harden, S. L., & Spruill, T. B. (2004). Ionic composition and nitrate in drainage water from fields fertilized with different nitrogen sources, Middle Swamp watershed, North Carolina, August 2000-August 2001. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Harden, Stephen L., and T. B. Spruill. Ionic Composition and Nitrate in Drainage Water from Fields Fertilized with Different Nitrogen Sources, Middle Swamp Watershed, North Carolina, August 2000-August 2001. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2004.

MLA (9th ed.) Citation

Harden, Stephen L., and T. B. Spruill. Ionic Composition and Nitrate in Drainage Water from Fields Fertilized with Different Nitrogen Sources, Middle Swamp Watershed, North Carolina, August 2000-August 2001. U.S. Dept. of the Interior, U.S. Geological Survey, 2004.