APA Citation

 Blum, R. (2011).  Linux command line and shell scripting bible.  Wiley Pub.

Chicago Style Citation

 Blum, Richard.  Linux Command Line and Shell Scripting Bible.  Wiley Pub, 2011.

MLA Citation

 Blum, Richard.  Linux Command Line and Shell Scripting Bible.  Wiley Pub, 2011.

Warning: These citations may not always be 100% accurate.