To cite R/dlmap in publications use:

Huang and George (2009) Look before you leap: a new approach to mapping QTL. TAG 119-899.911.

Corresponding BibTeX entry:

  @Article{,
    title = {Look before you leap: a new approach to mapping QTL},
    author = {B. Emma Huang and Andrew W. George},
    journal = {Theoretical and Applied Genetics},
    year = {2009},
    volume = {119},
    pages = {899-911},
  }