Dynamic Documents with R and knitr (Chapman & Hall/CRC The R Series)
"The book provides a systematic description of the package [knitr], including its concepts, design principles, and philosophy. It also has many examples, well-thought out advice, and useful tips and tricks. … The book is well written. It has introductory material useful for novices as well as advice for more seasoned users, all explained in conversational English without unnecessary technical jargon. … While I have been using Sweave and then knitr for several years, I still learned many new useful things from the book. … the book deserves a place on the bookshelves of both new and experienced R and TeX users."—Boris Veytsman,TUGboat, Volume 35, 2014"If you are looking to learn how to use knitr, this book is for you. There are a limited number of resources for learning knitr because the package is relatively new and the documentation produced by Xie is so good. … I think this book will continue to be the best resource about knitr …easy to understand … this is a great read and handy desk reference for the regular knitr user."—Journal of Statistical Software, January 2014