Roley, Sarah S., Xue, Chao, Hamilton, Stephen K., Tiedje, James M., and Robertson, G. Philip. Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.). Retrieved from https://par.nsf.gov/biblio/10112649. Soil Biology and Biochemistry 129.C Web. doi:10.1016/j.soilbio.2018.11.006.

Roley, Sarah S., Xue, Chao, Hamilton, Stephen K., Tiedje, James M., & Robertson, G. Philip. Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.). Soil Biology and Biochemistry, 129 (C). Retrieved from https://par.nsf.gov/biblio/10112649. https://doi.org/10.1016/j.soilbio.2018.11.006

Roley, Sarah S., Xue, Chao, Hamilton, Stephen K., Tiedje, James M., and Robertson, G. Philip. "Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.)". Soil Biology and Biochemistry 129 (C). Country unknown/Code not available. https://doi.org/10.1016/j.soilbio.2018.11.006. https://par.nsf.gov/biblio/10112649.

@article{osti_10112649,
place = {Country unknown/Code not available}, title = {Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.)}, url = {https://par.nsf.gov/biblio/10112649}, DOI = {10.1016/j.soilbio.2018.11.006}, abstractNote = {}, journal = {Soil Biology and Biochemistry}, volume = {129}, number = {C}, author = {Roley, Sarah S. and Xue, Chao and Hamilton, Stephen K. and Tiedje, James M. and Robertson, G. Philip}, }