Gaya APA

Schwab, G, O. et al (1996). Soil and water management systems / Glenn O. Schwab, Delmar D. Fangmeier, William J. Elliot (Ed.ke-4). New York: John Wiley n Sons.

Gaya MLA

Schwab, Glenn, O.. et al. "Soil and water management systems / Glenn O. Schwab, Delmar D. Fangmeier, William J. Elliot". Ed.ke-4 New York: John Wiley n Sons, 1996. Textbook.