To cite pcalg in publications use:

Markus Kalisch, Martin Mächler, Diego Colombo, Marloes H. Maathuis, Peter Bühlmann (2012). “Causal Inference Using Graphical Models with the R Package pcalg.” Journal of Statistical Software, 47(11), 1–26. doi:10.18637/jss.v047.i11.

Alain Hauser, Peter Bühlmann (2012). “Characterization and greedy learning of interventional Markov equivalence classes of directed acyclic graphs.” Journal of Machine Learning Research, 13, 2409–2464. https://jmlr.org/papers/v13/hauser12a.html.

Corresponding BibTeX entries:

  @Article{,
    title = {Causal Inference Using Graphical Models with the {R}
      Package {pcalg}},
    author = {{Markus Kalisch} and {Martin M\"achler} and {Diego
      Colombo} and {Marloes H. Maathuis} and {Peter B\"uhlmann}},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {47},
    number = {11},
    pages = {1--26},
    doi = {10.18637/jss.v047.i11},
  }

  @Article{,
    title = {Characterization and greedy learning of interventional
      {M}arkov equivalence classes of directed acyclic graphs},
    author = {{Alain Hauser} and {Peter B\"uhlmann}},
    journal = {Journal of Machine Learning Research},
    year = {2012},
    volume = {13},
    pages = {2409--2464},
    url = {https://jmlr.org/papers/v13/hauser12a.html},
  }