To cite the Accuracy package in publications use:

Altman, M., Gill, J. and M.P. McDonald (2007) Accuracy: Tools for Accurate and Reliable Statistical Computing Journal of Statistical Software: 21(1). (Software version: R Package, Accuracy, version 1.31)

Corresponding BibTeX entry:

  @Article{,
    title = {Accuracy: Tools for Accurate and Reliable Statistical
      Computing},
    author = {M. Altman and J. Gill and M.P. McDonald},
    journal = {Journal of Statistical Software},
    edition = {First},
    volume = {21},
    issue = {11},
    year = {2007},
    note = {Software: R Package, Accuracy, version 1.30 },
    url = {http://www.hmdc.harvard.edu/micah_altman/numal/},
  }