APA Style

Sobell, Mark G.. (2008). A Practical Guide to Ubuntu Linux . : Mark G. Sobell.

Chicago Style

Sobell, Mark G.. A Practical Guide to Ubuntu Linux. : Mark G. Sobell, 2008. Text.

MLA Style

Sobell, Mark G.. A Practical Guide to Ubuntu Linux. : Mark G. Sobell, 2008. Text.

Turabian Style

Sobell, Mark G.. A Practical Guide to Ubuntu Linux. : Mark G. Sobell, 2008. Print.