Gaya APA

Toy, T, J. (2002). Soil Erosion: Processes, Prediction, Measurement, and Control . New York: John Wiley & Sons.

Gaya MLA

Toy, Terrence, J.(a.o). "Soil Erosion: Processes, Prediction, Measurement, and Control". New York: John Wiley & Sons, 2002. Text.