To cite 'igraph' in publications use:

  Csardi G, Nepusz T (2006). “The igraph software package for complex
  network research.” _InterJournal_, *Complex Systems*, 1695.
  <https://igraph.org>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {The igraph software package for complex network research},
    author = {Gabor Csardi and Tamas Nepusz},
    journal = {InterJournal},
    volume = {Complex Systems},
    pages = {1695},
    year = {2006},
    url = {https://igraph.org},
  }

Csárdi G, Nepusz T, Traag V, Horvát Sz, Zanini F, Noom D, Müller K
(2024). _igraph: Network Analysis and Visualization in R_.
doi:10.5281/zenodo.7682609 <https://doi.org/10.5281/zenodo.7682609>, R
package version 2.0.2, <https://CRAN.R-project.org/package=igraph>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{igraph}: Network Analysis and Visualization in R},
    author = {Gábor Csárdi and Tamás Nepusz and Vincent Traag and Szabolcs Horvát and Fabio Zanini and Daniel Noom and Kirill Müller},
    year = {2024},
    note = {R package version 2.0.2},
    doi = {10.5281/zenodo.7682609},
    url = {https://CRAN.R-project.org/package=igraph},
  }