Cita APA (7th ed.)

Havlin, J. L., Beaton, J. D., Tisdale, S. L., & Nelson, W. L. (1999). Soil fertility and fertilizers: An introduction to nutrient management (6a. ed.). Prentice Hall.

Cita Chicago (17th ed.)

Havlin, John L., James D. Beaton, Samuel L. Tisdale, i Werner L. Nelson. Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 6a. ed. Upper Saddle River: Prentice Hall, 1999.

Cita MLA (9th ed.)

Havlin, John L., et al. Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 6a. ed. Prentice Hall, 1999.