author = { Wickham, Hadley },

title = { R packages },

edition = { First edition } ,

publisher = {O'Reilly},

isbn = {9781491910597},

keywords = { R (Computer program language) , Datenanalyse , R Programm },

year = {2015},

address = { Beijing },

url = { http://slubdd.de/katalog?TN_libero_mab2 }