references.bib

@Manual{xie2016knitr,
  title = {knitr: A General-Purpose Package for Dynamic Report Generation in R},
  author = {Yihui Xie},
  year = {2016},
  note = {R package version 1.12.3},
  url = {http://yihui.name/knitr/},
}

@Manual{boettiger2015knitcitations,
  title = {knitcitations: Citations for 'Knitr' Markdown Files},
  author = {Carl Boettiger},
  year = {2015},
  note = {R package version 1.0.7},
  url = {https://CRAN.R-project.org/package=knitcitations},
}

@Manual{wickham2016devtools,
  title = {devtools: Tools to Make Developing R Packages Easier},
  author = {Hadley Wickham and Winston Chang},
  year = {2016},
  note = {R package version 1.11.0},
  url = {https://CRAN.R-project.org/package=devtools},
}

@Manual{2014gitbook,
  title = {Gitbook: Build beautiful interactive books using GitHub/Git and Markdown},
  author = {{Samy Pess{\a'e} and Aaron O'Mullan}},
  year = {2014},
  url = {http://www.gitbook.io/},
}