Chang, W. 2013. R Graphics Cookbook. Oreilly and Associate Series. O’Reilly Media, Incorporated.

Gelman, Andrew, Cristian Pasarica, and Rahul Dodhia. 2002. “Let’s Practice What We Preach: Turning Tables into Graphs.” The American Statistician 56 (2). American Statistical Association, Taylor & Francis, Ltd.:121–30.

Grolemund, Garrett, and Hadley Wickham. 2011. “Dates and Times Made Easy with Lubridate.” Journal of Statistical Software, Articles 40 (3):1–25.

Mecklenburg, Robert. 2009. Managing Projects with Gnu Make. Nutshell Handbooks. O’Reilly Media.

Murrell, Paul. 2005. R Graphics. Chapman & Hall/Crc the R Series. CRC Press.

Robbins, Naomi B. 2012. Creating More Effective Graphs. Wiley.

Rogowitz, Bernice E, and Lloyd A Treinish. 1996. “Why Should Engineers and Scientists Be Worried About Color?” IBM Thomas J. Watson Research Center, Yorktown Heights, NY.

Spector, P. 2008. Data Manipulation with R. Use R! Springer.

White, Ethan P., Elita Baldridge, Zachary T. Brym, Kenneth J. Locey, Daniel J. McGlinn, and Sarah R. Supp. 2013. “Nine Simple Ways to Make It Easier to (Re)use Your Data.” PeerJ PrePrints 1 (July):e7v2.

Wickham, H. 2015. Advanced R. Chapman & Hall/Crc the R Series. CRC Press.

Wickham, Hadley. 2009. Ggplot2: Elegant Graphics for Data Analysis. Use R! Springer New York.

———. 2010. “A Layered Grammar of Graphics.” Journal of Computational and Graphical Statistics 19 (1):3–28.

———. 2011a. “Testthat: Get Started with Testing.” The R Journal 3 (1):5–10.

———. 2011b. “The Split-Apply-Combine Strategy for Data Analysis.” Journal of Statistical Software, Articles 40 (1):1–29.

———. 2014. “Tidy Data.” Journal of Statistical Software, Articles 59 (10):1–23.

Wickham, Hadley, and Jenny Bryan. In progress. R Packages. 2nd ed.

Wickham, Hadley, and Garrett Grolemund. 2016. R for Data Science: Import, Tidy, Transform, Visualize, and Model Data. O’Reilly Media.

Zeileis, Achim, Kurt Hornik, and Paul Murrell. 2009. “Escaping Rgbland: Selecting Colors for Statistical Graphics.” Computational Statistics & Data Analysis 53 (9):3259–70.