Brady, N. C., & Weil, R. R. (2008). The nature and properties of soils (Fourteenth ed.). Pearson Education.
Cita Chicago (17th ed.)Brady, Nyle C., i Ray R. Weil. The Nature and Properties of Soils. Fourteenth ed. Upper Saddle River, N.J: Pearson Education, 2008.
Cita MLA (9th ed.)Brady, Nyle C., i Ray R. Weil. The Nature and Properties of Soils. Fourteenth ed. Pearson Education, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.