Cite
Buying Green.
MLA
Ashley, Steven. “Buying Green.” Scientific American Earth 3.0, vol. 18, no. 4, Sept. 2008, pp. 90–94. EBSCOhost, https://doi.org/10.1038/scientificamericanearth0908-90.
APA
Ashley, S. (2008). Buying Green. Scientific American Earth 3.0, 18(4), 90–94. https://doi.org/10.1038/scientificamericanearth0908-90
Chicago
Ashley, Steven. 2008. “Buying Green.” Scientific American Earth 3.0 18 (4): 90–94. doi:10.1038/scientificamericanearth0908-90.