Smith, R. A., Alexander, R. B., & Schwarz, G. E. Natural background concentrations of nutrients in streams and rivers of the conterminous United States.
Citação norma ChicagoSmith, Richard A., Richard B. Alexander, e Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.
Citação norma MLASmith, Richard A., Richard B. Alexander, e Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.