diff --git a/bibliography.bib b/bibliography.bib
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+# keep references in here
+
+  ##############
+  # R packages
+
+  @Manual{baseR,
+    title = {R: A Language and Environment for Statistical Computing},
+    author = {{R Core Team}},
+    organization = {R Foundation for Statistical Computing},
+    address = {Vienna, Austria},
+    year = {2016},
+    url = {https://www.R-project.org/},
+  }
+ @Book{bookdown,
+    title = {bookdown: Authoring Books and Technical Documents with {R} Markdown},
+    author = {Yihui Xie},
+    publisher = {Chapman and Hall/CRC},
+    address = {Boca Raton, Florida},
+    year = {2016},
+    note = {ISBN 978-1138700109},
+    url = {https://github.com/rstudio/bookdown},
+  }
+  @Manual{data.table,
+    title = {data.table: Extension of Data.frame},
+    author = {M Dowle and A Srinivasan and T Short and S Lianoglou with contributions from R Saporta and E Antonyan},
+    year = {2015},
+    note = {R package version 1.9.6},
+    url = {https://CRAN.R-project.org/package=data.table},
+  }
+     @Book{ggplot2,
+    author = {Hadley Wickham},
+    title = {ggplot2: Elegant Graphics for Data Analysis},
+    publisher = {Springer-Verlag New York},
+    year = {2009},
+    isbn = {978-0-387-98140-6},
+    url = {http://ggplot2.org},
+  }
+  @Manual{here,
+    title = {here: A Simpler Way to Find Your Files},
+    author = {Kirill Müller},
+    year = {2017},
+    note = {R package version 0.1},
+    url = {https://CRAN.R-project.org/package=here},
+  }
+  @Manual{hms,
+    title = {hms: Pretty Time of Day},
+    author = {Kirill Müller},
+    year = {2018},
+    note = {R package version 0.4.2},
+    url = {https://CRAN.R-project.org/package=hms},
+  }
+  @Manual{kableExtra,
+    title = {kableExtra: Construct Complex Table with 'kable' and Pipe Syntax},
+    author = {Hao Zhu},
+    year = {2018},
+    note = {R package version 0.8.0},
+    url = {https://CRAN.R-project.org/package=kableExtra},
+  }
+  @Manual{knitr,
+    title = {knitr: A General-Purpose Package for Dynamic Report Generation in R},
+    author = {Yihui Xie},
+    year = {2016},
+    url = {https://CRAN.R-project.org/package=knitr},
+  }
+   @Article{lubridate,
+    title = {Dates and Times Made Easy with {lubridate}},
+    author = {Garrett Grolemund and Hadley Wickham},
+    journal = {Journal of Statistical Software},
+    year = {2011},
+    volume = {40},
+    number = {3},
+    pages = {1--25},
+    url = {http://www.jstatsoft.org/v40/i03/},
+  }
+    @Manual{rmarkdown,
+    title = {rmarkdown: Dynamic Documents for R},
+    author = {JJ Allaire and Yihui Xie and Jonathan McPherson and Javier Luraschi and Kevin Ushey and Aron Atkins and Hadley Wickham and Joe Cheng and Winston Chang},
+    year = {2018},
+    note = {R package version 1.10},
+    url = {https://CRAN.R-project.org/package=rmarkdown},
+  }
+    @Manual{skimr,
+    title = {skimr: skimr},
+    author = {Eduardo {Arino de la Rubia} and Hao Zhu and Shannon Ellis and Elin Waring and Michael Quinn},
+    year = {2017},
+    note = {R package version 1.0},
+    url = {https://github.com/ropenscilabs/skimr},
+  }
+  
+  @Manual{saveData,
+    title = {saveData: R package to support the re-use of the SAVE household demand response trial data},
+    author = {Ben Anderson and Tom Rushby and Michael Harper},
+    year = {2019},
+    note = {R package version 0.1},
+  }
+  
+@techreport{saveUKDA,
+	address = {Colchester, Essex},
+	title = {Solent {Achieving} {Value} from {Efficiency} ({SAVE}): randomised control trial household electricity consumption, survey and time-use data 2017-2018},
+	institution = {UK Data Service},
+	author = {{Thomas Rushby} and {Ben Anderson} and {Patrick James} and {Abubakr Bahaj}}
+}
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