APA ציטוט

Cravotta, C. A. (2002). Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania. U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services.

Chicago Style (17th ed.) Citation

Cravotta, Charles A. Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin, Pennsylvania. [Washington, D.C., Denver CO: U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services, 2002.

ציטוט MLA

Cravotta, Charles A. Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin, Pennsylvania. U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services, 2002.