To cite package ‘surveillance’ in publications use:

surveillance: An R package for the surveillance of infectious diseases (2007), M. Hoehle, Computational Statistics, 22(4), pp. 571--582.

Corresponding BibTeX entry:

  @Article{,
    title = {surveillance: An {R} package for the surveillance of
      infectious diseases},
    author = {M. {Hoehle}},
    journal = {Computational Statistics},
    year = {2007},
    volume = {22},
    number = {4},
    pages = {571--582},
  }