John L.Havlin and others. (2014). Soil fertility and Fertilizers: An Introduction to Nutrient Management (8th.). PHI.
Chicago Edition CitationJohn L.Havlin and others. Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 8th. NewDelhi: PHI, 2014.
MLA Edition CitationJohn L.Havlin and others. Soil Fertility and Fertilizers: An Introduction to Nutrient Management. 8th. PHI, 2014.
Warning: These citations may not always be 100% accurate.