APA

Robertson G. P., Ellis B. G., Crum J. R., Paul E. A., Klug M. J. & Klimgensmith K. M.Soil resources, microbial activity and primary production across an agricultural ecosystem. : .

Chicago

Robertson G Philip, Ellis Boyd G, Crum James R, Paul Eldor A, Klug Michael J and Klimgensmith Katherine M.Soil resources, microbial activity and primary production across an agricultural ecosystem. : .

Harvard

Robertson G. P., Ellis B. G., Crum J. R., Paul E. A., Klug M. J. and Klimgensmith K. M.Soil resources, microbial activity and primary production across an agricultural ecosystem. : .

MLA

Robertson G Philip, Ellis Boyd G, Crum James R, Paul Eldor A, Klug Michael J and Klimgensmith Katherine M.: . .