To cite anchors in publications use:

Jonathan Wand, Gary King, Olivia Lau (2011). anchors: Software for Anchoring Vignette Data. Journal of Statistical Software, 42(3), 1-25. URL http://www.jstatsoft.org/v42/i03/.

Corresponding BibTeX entry:

  @Article{,
    title = {{anchors}: Software for Anchoring Vignette Data},
    author = {Jonathan Wand and Gary King and Olivia Lau},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {42},
    number = {3},
    pages = {1--25},
    url = {http://www.jstatsoft.org/v42/i03/},
  }