APA Citation

 Michael, R. K. (2008).  Mastering Unix shell scripting: Bash, Bourne, and Korn Shell scripting for programmers, system administrators, and Unix gurus.  Wiley Pub.

Chicago Style Citation

 Michael, Randal K.  Mastering Unix Shell Scripting: Bash, Bourne, and Korn Shell Scripting for Programmers, System Administrators, and Unix Gurus.  Wiley Pub, 2008.

MLA Citation

 Michael, Randal K.  Mastering Unix Shell Scripting: Bash, Bourne, and Korn Shell Scripting for Programmers, System Administrators, and Unix Gurus.  Wiley Pub, 2008.

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