To cite WrightMap in publications, please use:

Irribarra DT, Freund R (2014). Wright Map: IRT item-person map with ConQuest integration. http://github.com/david-ti/wrightmap.

Corresponding BibTeX entry:

  @Manual{,
    author = {David Torres Irribarra and Rebecca Freund},
    title = {Wright Map: IRT item-person map with ConQuest
      integration},
    year = {2014},
    url = {http://github.com/david-ti/wrightmap},
  }