Brady, N. C., & Weil, R. R. (2005). The nature and properties of soils (13th ed.). Pearson Prentice Hall.
Cita Chicago (17th ed.)Brady, Nyle C., i Ray R. Weil. The Nature and Properties of Soils. 13th ed. Delhi: Pearson Prentice Hall, 2005.
Cita MLA (9th ed.)Brady, Nyle C., i Ray R. Weil. The Nature and Properties of Soils. 13th ed. Pearson Prentice Hall, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.