McFarland, M. L., Provin, T. L., & Feagley, S. E. (1997). Managing crop nutrients through soil, manure, and effluent testing. Texas Agricultural Extension Service, Texas A&M University System.
Chicago Style (17th ed.) CitationMcFarland, Mark Lee, Tony Lee Provin, and Sam Edward Feagley. Managing Crop Nutrients Through Soil, Manure, and Effluent Testing. College Station, Tex.: Texas Agricultural Extension Service, Texas A&M University System, 1997.
MLA (9th ed.) CitationMcFarland, Mark Lee, et al. Managing Crop Nutrients Through Soil, Manure, and Effluent Testing. Texas Agricultural Extension Service, Texas A&M University System, 1997.
Warning: These citations may not always be 100% accurate.