Cite
The residual value of fertiliser N in crop sequences: An appraisal of 60 years of research using 15N tracer.
MLA
Smith, Christopher J., and Phillip M. Chalk. “The Residual Value of Fertiliser N in Crop Sequences: An Appraisal of 60 years of Research Using 15N Tracer.” Field Crops Research, vol. 217, Mar. 2018, pp. 66–74. EBSCOhost, https://doi.org/10.1016/j.fcr.2017.12.006.
APA
Smith, C. J., & Chalk, P. M. (2018). The residual value of fertiliser N in crop sequences: An appraisal of 60 years of research using 15N tracer. Field Crops Research, 217, 66–74. https://doi.org/10.1016/j.fcr.2017.12.006
Chicago
Smith, Christopher J., and Phillip M. Chalk. 2018. “The Residual Value of Fertiliser N in Crop Sequences: An Appraisal of 60 years of Research Using 15N Tracer.” Field Crops Research 217 (March): 66–74. doi:10.1016/j.fcr.2017.12.006.