Aldrich, S. R., & Worthen, E. L. (1956). Farm soils: Their fertilization and management (5.). John Wiley & Sons INC.
Chicago Edition CitationAldrich, Samuel R., i Edmund L. Worthen. Farm Soils: Their Fertilization and Management. 5. NewYork: John Wiley & Sons INC, 1956.
Cita MLAAldrich, Samuel R., i Edmund L. Worthen. Farm Soils: Their Fertilization and Management. 5. John Wiley & Sons INC, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.