Avinash Paul <br/><br/>
Mastering Text Mining with R. 

 - 258. 
<br/><br/>Electronic book text. 
<br/><br/><br/>Data in extended ASCII character set. <br/>Mode of access: Internet. 
<br/><br/><label>ISBN: </label>9781782174707 
<br/><br/><label>Standard No.: </label>9781782174707  isbn