To cite package 'GAabbreviate' in publications use:

Sahdra B. K., Ciarrochi J., Parker P. and Scrucca L. (2016). Using genetic algorithms in a large nationally representative American sample to abbreviate the Multidimensional Experiential Avoidance Questionnaire. Frontiers in Psychology, Vol. 7(189), pp. 1--14.

Corresponding BibTeX entry:

  @Article{,
    title = {Using genetic algorithms in a large nationally
      representative American sample to abbreviate the
      {M}ultidimensional {E}xperiential {A}voidance {Q}uestionnaire},
    author = {{Sahdra} and B. K. and {Ciarrochi} and {J.} and {Parker}
      and {P.} and {Scrucca} and {L.}},
    journal = {Frontiers in Psychology},
    year = {2016},
    volume = {7},
    number = {189},
    pages = {1--14},
    url =
      {http://www.frontiersin.org/quantitative_psychology_and_measurement/10.3389/fpsyg.2016.00189/abstract},
  }