To cite wgaim in publications use:

Julian Taylor, Arunas Verbyla (2011). R Package wgaim: QTL Analysis in Bi-Parental Populations Using Linear Mixed Models. Journal of Statistical Software, 40(7), 1-18. URL http://www.jstatsoft.org/v40/i07/.

Corresponding BibTeX entry:

  @Article{,
    title = {{R} Package {wgaim}: QTL Analysis in Bi-Parental
      Populations Using Linear Mixed Models},
    author = {Julian Taylor and Arunas Verbyla},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {40},
    number = {7},
    pages = {1--18},
    url = {http://www.jstatsoft.org/v40/i07/},
  }