Schwab, G. O. (1996). Soil and water management systems (4th ed.). New York: John Wiley and Sons.
Chicago-stil citatSchwab, Glenn Orville. Soil and Water Management Systems. 4th ed. New York: John Wiley and Sons, 1996.
MLA-referensSchwab, Glenn Orville. Soil and Water Management Systems. 4th ed. New York: John Wiley and Sons, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.