Cite VizieR catalogue

J/ApJ/812/34 (Liu C.)

Cite the catalogue (data) and the VizieR service
Bibtex 

@dataset{vizier:J/ApJ/812/34,
  author={Liu C., Peng E.W., Cote P., Ferrarese L., Jordan A., Mihos J.C.,Zhang H.-X., Munoz R.P., Puzia T.H., Lancon A., Gwyn S., Cuillandre J.-C.,Blakeslee J.P., Boselli A., Durrell P.R., Duc P.-A., Guhathakurta P.,MacArthur L.A., Mei S., Sanchez-Janssen R., Xu H.},
  title = {Properties of UCD candidates in M87/M49/M60 regions},
  publisher = { Centre de Donnees astronomique de Strasbourg (CDS) },
  doi = {https://doi.org/10.26093/cds/vizier.18120034}
}

Cite VizieR

VizieR service DOI: 10.26093/cds/vizier

Cite VizieR service only.
Bibtex: 
@MISC{vizier,
  author = { Ochsenbein F. et. al},
  title = "{ The VizieR database of astronomical catalogues }",
  publisher = "{ Centre de Donnees astronomique de Strasbourg (CDS) }",
  doi = {https://doi.org/10.26093/cds/vizier}
}

Cite article

Cite the article attached to the catalogue.
Citation by ADS: 2015ApJ...812...34L

Acknowledging the VizieR Service

If the access to catalogues with VizieR was helpful for your research work,the following acknowledgment would be appreciated: 
"This research has made use of the VizieR catalogue access tool, CDS,
 Strasbourg, France (DOI : 10.26093/cds/vizier). The original description 
 of the VizieR service was published in 2000, A&AS 143, 23"

More information

Rules of usage for VizieR data
AAS policies