Elliot, W. J., Fangmeier, D. D., Frevert, R. K., & Schwab, G. O. (2002). Soil and water conservation Engineering (4.).
Chicago Edition CitationElliot, William J., Delmar D. Fangmeier, Richard K. Frevert, i Glenn O. Schwab. Soil and Water Conservation Engineering. 4. Newyork, Jhonwiley&Sons, 2002.
Cita MLAElliot, William J., et al. Soil and Water Conservation Engineering. 4. 2002.
Atenció: Aquestes cites poden no estar 100% correctes.