KOHNKE, H. (1979). Soil physics. TATA McGraw-Hill Publishing.
Cita Chicago (17th ed.)KOHNKE, Helmut. Soil Physics. New Delhi: TATA McGraw-Hill Publishing, 1979.
Cita MLA (9th ed.)KOHNKE, Helmut. Soil Physics. TATA McGraw-Hill Publishing, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.