WICKHAM, Hadley - GROLEMUND, Garrett. R for Data Science : Import, Tidy, Transform, Visualize, and Model Data. Sebastopol : O'Reilly, 2017. 492 s. ISBN 978-1-491-91039-9. [Copy count : 2, currently available 0, at library only 1]
WICKHAM, Hadley. ggplot2 : Elegant Graphics for Data Analysis. 2nd Edition. Cham : Springer, 2016. 260 s. Use R! ISBN 978-3-319-24275-0. ISSN 2197-5736. [Copy count : 2, currently available 0, at library only 1]