APA aipamena

Smith, R. A., Alexander, R. B., & Schwarz, G. E. Natural background concentrations of nutrients in streams and rivers of the conterminous United States.

Chicago Style aipamena

Smith, Richard A., Richard B. Alexander, và Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.

MLA aipamena

Smith, Richard A., Richard B. Alexander, và Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.