Cite
Shale gas development impacts on surface water quality in Pennsylvania.
MLA
Olmstead, Sheila M., et al. “Shale Gas Development Impacts on Surface Water Quality in Pennsylvania.” Proceedings of the National Academy of Sciences of the United States of America, vol. 110, no. 13, Mar. 2013, pp. 4962–67. EBSCOhost, https://doi.org/10.1073/pnas.1213871110.
APA
Olmstead, S. M., Muehlenbachs, L. A., Jhih-Shyang Shih, Ziyan Chu, & Krupnick, A. J. (2013). Shale gas development impacts on surface water quality in Pennsylvania. Proceedings of the National Academy of Sciences of the United States of America, 110(13), 4962–4967. https://doi.org/10.1073/pnas.1213871110
Chicago
Olmstead, Sheila M., Lucija A. Muehlenbachs, Jhih-Shyang Shih, Ziyan Chu, and Alan J. Krupnick. 2013. “Shale Gas Development Impacts on Surface Water Quality in Pennsylvania.” Proceedings of the National Academy of Sciences of the United States of America 110 (13): 4962–67. doi:10.1073/pnas.1213871110.