Burkart, S., Manderscheid, R., & Weigel, H. (2009). Canopy CO2 exchange of sugar beet under different CO2 concentrations and nitrogen supply: Results from a free-air CO2 enrichment study. Plant Biology, 11, 109. https://doi.org/10.1111/j.1438-8677.2009.00240.x
Chicago Style (17th ed.) CitationBurkart, S., R. Manderscheid, and H.-J Weigel. "Canopy CO2 Exchange of Sugar Beet Under Different CO2 Concentrations and Nitrogen Supply: Results from a Free-air CO2 Enrichment Study." Plant Biology 11 (2009): 109. https://doi.org/10.1111/j.1438-8677.2009.00240.x.
MLA (9th ed.) CitationBurkart, S., et al. "Canopy CO2 Exchange of Sugar Beet Under Different CO2 Concentrations and Nitrogen Supply: Results from a Free-air CO2 Enrichment Study." Plant Biology, vol. 11, 2009, p. 109, https://doi.org/10.1111/j.1438-8677.2009.00240.x.