Jenny, H. (1941). Factors of soil for mation: A system of quantitative pedology. Mcgraw-Hill.
Cita Chicago (17th ed.)Jenny, Hans. Factors of Soil for Mation: A System of Quantitative Pedology. New York: Mcgraw-Hill, 1941.
Cita MLA (9th ed.)Jenny, Hans. Factors of Soil for Mation: A System of Quantitative Pedology. Mcgraw-Hill, 1941.
Atenció: Aquestes cites poden no estar 100% correctes.