APA (7th ed.) Citation

Martín-Martín, A., Orduna-Malea, E., Thelwall, M., & Delgado López-Cózar, E. (2018). Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories. Journal of informetrics, 12(4), 1160-1177. https://doi.org/10.1016/j.joi.2018.09.002

Chicago Style (17th ed.) Citation

Martín-Martín, Alberto, Enrique Orduna-Malea, Mike Thelwall, and Emilio Delgado López-Cózar. "Google Scholar, Web of Science, and Scopus: A Systematic Comparison of Citations in 252 Subject Categories." Journal of Informetrics 12, no. 4 (2018): 1160-1177. https://doi.org/10.1016/j.joi.2018.09.002.

MLA (9th ed.) Citation

Martín-Martín, Alberto, et al. "Google Scholar, Web of Science, and Scopus: A Systematic Comparison of Citations in 252 Subject Categories." Journal of Informetrics, vol. 12, no. 4, 2018, pp. 1160-1177, https://doi.org/10.1016/j.joi.2018.09.002.