To cite package ‘esgtoolkit’ in publications use:

  Moudiki T (2014). _esgtoolkit: Toolkit for Monte Carlo Simulations_.
  R package version 1.1.2, <https://github.com/techtonique/esgtoolkit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {esgtoolkit: Toolkit for Monte Carlo Simulations},
    author = {T. Moudiki},
    year = {2014},
    note = {R package version 1.1.2},
    url = {https://github.com/techtonique/esgtoolkit},
  }