Shotyk, W., Krachler, M., Martinez-Cortizas, A., Cheburkin, A. K., & Emons, H. (2002). A peat bog record of natural, pre-anthropogenic enrichments of trace elements in atmospheric aerosols since 12 370 14C yr BP, and their variation with Holocene climate change. Earth and planetary science letters, 199(1), . https://doi.org/10.1016/S0012-821X(02)00553-8
Chicago Style (17th ed.) CitationShotyk, William, Michael Krachler, Antonio Martinez-Cortizas, Andriy K. Cheburkin, and Hendrik Emons. "A Peat Bog Record of Natural, Pre-anthropogenic Enrichments of Trace Elements in Atmospheric Aerosols Since 12 370 14C Yr BP, and Their Variation with Holocene Climate Change." Earth and Planetary Science Letters 199, no. 1 (2002). https://doi.org/10.1016/S0012-821X(02)00553-8.
MLA (9th ed.) CitationShotyk, William, et al. "A Peat Bog Record of Natural, Pre-anthropogenic Enrichments of Trace Elements in Atmospheric Aerosols Since 12 370 14C Yr BP, and Their Variation with Holocene Climate Change." Earth and Planetary Science Letters, vol. 199, no. 1, 2002, https://doi.org/10.1016/S0012-821X(02)00553-8.