APA

Argerich, A., Johnson, S., Sebestyen, S., Rhoades, C., Greathouse, E., Knoepp, J., Adams, M., Likens, G., Campbell, J., McDowell, W., Scatena, F., & Ice, G. (2013). Trends in stream nitrogen concentrations for forested reference catchments across the USA. : Institute of Physics.