Ruiz-Castillo, J., & Waltman, L. (2015). Field-normalized citation impact indicators using algorithmically constructed classification systems of science. Journal of informetrics, 9(1), 102-117. https://doi.org/10.1016/j.joi.2014.11.010
Chicago Style (17th ed.) CitationRuiz-Castillo, Javier, and Ludo Waltman. "Field-normalized Citation Impact Indicators Using Algorithmically Constructed Classification Systems of Science." Journal of Informetrics 9, no. 1 (2015): 102-117. https://doi.org/10.1016/j.joi.2014.11.010.
MLA (9th ed.) CitationRuiz-Castillo, Javier, and Ludo Waltman. "Field-normalized Citation Impact Indicators Using Algorithmically Constructed Classification Systems of Science." Journal of Informetrics, vol. 9, no. 1, 2015, pp. 102-117, https://doi.org/10.1016/j.joi.2014.11.010.