To cite package 'ConjointChecks' in publications use:

Ben Domingue (2012). ConjointChecks: A package to check the cancellation axioms of conjoint measurement. (R package version 0.0.3.)

Corresponding BibTeX entry:

  @Manual{,
    title = {{ConjointChecks}: A package to check the cancellation
      axioms of conjoint measurement.},
    author = {Ben Domingue},
    year = {2012},
  }