Cita APA (7th ed.)

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.