To cite games in publications use:

Brenton Kenkel, Curtis S. Signorino (2014). Estimating Extensive Form Games in R. Journal of Statistical Software, 56(8), 1-27. URL http://www.jstatsoft.org/v56/i08/.

Corresponding BibTeX entry:

  @Article{,
    title = {Estimating Extensive Form Games in {R}},
    author = {Brenton Kenkel and Curtis S. Signorino},
    journal = {Journal of Statistical Software},
    year = {2014},
    volume = {56},
    number = {8},
    pages = {1--27},
    url = {http://www.jstatsoft.org/v56/i08/},
  }