To cite dlmap in publications use:

B. Emma Huang, Rohan Shah, Andrew W. George (2012). dlmap: An R Package for Mixed Model QTL and Association Analysis. Journal of Statistical Software, 50(6), 1-22. URL http://www.jstatsoft.org/v50/i06/.

Corresponding BibTeX entry:

  @Article{,
    title = {{dlmap}: An {R} Package for Mixed Model QTL and
      Association Analysis},
    author = {B. Emma Huang and Rohan Shah and Andrew W. George},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {50},
    number = {6},
    pages = {1--22},
    url = {http://www.jstatsoft.org/v50/i06/},
  }