Citations refer to the original publication, not to a Scieee localized version.
Ortega Rodríguez, F. J., MacDonald, C., Troyano Jiménez, J. A., & Cruz Mata, F. (2010). Spam detection with a content-based random-walk algorithm. ACM Digital Library. https://doi.org/10.1145/1871985.1871994
Ortega Rodríguez, Francisco Javier, et al. Spam detection with a content-based random-walk algorithm. ACM Digital Library, 2010. https://doi.org/10.1145/1871985.1871994.
Ortega Rodríguez, Francisco Javier, Craig MacDonald, José Antonio Troyano Jiménez, and Fermín Cruz Mata. Spam detection with a content-based random-walk algorithm. ACM Digital Library, 2010. https://doi.org/10.1145/1871985.1871994.
Ortega Rodríguez, F. J. et al. (2010) Spam detection with a content-based random-walk algorithm. ACM Digital Library. Available at: https://doi.org/10.1145/1871985.1871994.
F. J. Ortega Rodríguez, C. MacDonald, J. A. Troyano Jiménez, and F. Cruz Mata, “Spam detection with a content-based random-walk algorithm,” ACM Digital Library, 2010, doi: 10.1145/1871985.1871994.
@misc{ortegarodriguez2010spam,
author = {Ortega Rodríguez, Francisco Javier and MacDonald, Craig and Troyano Jiménez, José Antonio and Cruz Mata, Fermín},
title = {Spam detection with a content-based random-walk algorithm},
year = {2010},
publisher = {ACM Digital Library},
doi = {10.1145/1871985.1871994},
url = {https://doi.org/10.1145/1871985.1871994}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.