(2011). Soil fertility and fertilizers: An introduction to nutrient management. (7th ed.). PHI Learning.
Cita Chicago (17th ed.)Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 7th ed. New Delhi: PHI Learning, 2011.
Cita MLA (9th ed.)Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 7th ed. PHI Learning, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.