Buckman, H. O., & Brady, N. C. (1974). The nature and properties of soils (8th ed.). Macmillan Publishing Co.
Cita Chicago (17th ed.)Buckman, Harry O., i Nyle C. Brady. The Nature and Properties of Soils. 8th ed. New York: Macmillan Publishing Co, 1974.
Cita MLA (9th ed.)Buckman, Harry O., i Nyle C. Brady. The Nature and Properties of Soils. 8th ed. Macmillan Publishing Co, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.