Liu, C., & Evett, J. B. Soil properties: Testing, measurement, and evaluation (4a ed.).
Cita Chicago (17th ed.)Liu, Cheng, i Jack B. Evett. Soil Properties: Testing, Measurement, and Evaluation. 4a ed.
Cita MLA (8th ed.)Liu, Cheng, i Jack B. Evett. Soil Properties: Testing, Measurement, and Evaluation. 4a ed.
Atenció: Aquestes cites poden no estar 100% correctes.