To cite package MLDS in publications use:

Knoblauch K, Maloney LT (2008). “MLDS : Maximum likelihood difference scaling in R.” Journal of Statistical Software, 25, 1–26. doi: 10.18637/jss.v025.i02.

Corresponding BibTeX entry:

  @Article{,
    title = {{MLDS} : Maximum likelihood difference scaling in {R}},
    author = {K. Knoblauch and L. T. Maloney},
    journal = {Journal of Statistical Software},
    volume = {25},
    year = {2008},
    pages = {1--26},
    doi = {10.18637/jss.v025.i02},
  }