If you use ScottKnott package please cite:

Enio G. Jelihovschi, José C. Faria, and Ivan Bezerra Allaman (2014). ScottKnott: A Package for Performing the Scott-Knott Clustering Algorithm in R. Trends in Applied and Computational Mathematics 15(1), 3-17. URL http://www.sbmac.org.br/tema/seer/index.php/tema/article/view/646/643.

Lots of time and effort were invested in creating ScottKnott package. Please, cite it when using it together with R. See also ‘citation()’ for citing R.

Corresponding BibTeX entry:

  @Article{,
    title = {ScottKnott: A Package for Performing the Scott-Knott
      Clustering Algorithm in R.},
    author = {Enio G. Jelihovschi and José Cláudio Faria and Ivan
      Bezerra Allaman},
    journal = {Trends in Applied and Computational Mathematics},
    year = {2014},
    volume = {15},
    number = {1},
    pages = {3--17},
    url =
      {http://www.sbmac.org.br/tema/seer/index.php/tema/article/view/646/643},
  }