To cite package 'pollstR' in publications use:

Thomas J. Leeper and Jeffrey B. Arnold (2014). pollstR: R client for Pollster API. R package version 1.1.0.

Corresponding BibTeX entry:

  @Manual{,
    title = {pollstR: R client for Pollster API},
    author = {Thomas J. Leeper and Jeffrey B. Arnold},
    year = {2014},
    note = {R package version 1.1.0},
  }