Levin, I., Kromer, B., & Hammer, S. (2013). Atmospheric [Delta] 14CO2 trend in Western European background air from 2000 to 2012. Tellus. Series B, Chemical and physical meteorology, 65(1), . https://doi.org/10.3402/tellusb.v65i0.20092
Chicago Style (17th ed.) CitationLevin, Ingeborg, Bernd Kromer, and Samuel Hammer. "Atmospheric [Delta] 14CO2 Trend in Western European Background Air from 2000 to 2012." Tellus. Series B, Chemical and Physical Meteorology 65, no. 1 (2013). https://doi.org/10.3402/tellusb.v65i0.20092.
MLA (9th ed.) CitationLevin, Ingeborg, et al. "Atmospheric [Delta] 14CO2 Trend in Western European Background Air from 2000 to 2012." Tellus. Series B, Chemical and Physical Meteorology, vol. 65, no. 1, 2013, https://doi.org/10.3402/tellusb.v65i0.20092.