North American Forest Soils Conference Gainesville, F., Soil Science Society of America., Society of American Foresters., Canadian Institute of Forestry., Canadian Soil Science Society., MacFee, W. W., & Michael Kelly, J. (1995). Carbon forms and functions in forest soils. Wisconsin, Estados Unidos: Soil Science Society of America.

North American Forest Soils Conference Gainesville, Florida, Soil Science Society of America, Society of American Foresters, Canadian Institute of Forestry, Canadian Soil Science Society, William W. MacFee, and James Michael Kelly. Carbon Forms and Functions in Forest Soils. Wisconsin, Estados Unidos: Soil Science Society of America, 1995.

North American Forest Soils Conference Gainesville, Florida, et al. Carbon Forms and Functions in Forest Soils. Wisconsin, Estados Unidos: Soil Science Society of America, 1995.