Citazione APA

Sobell, M. G. (1995). A practical guide to the UNIX system (3rd ed.). Addison-Wesley.

Stile di citazione Chicago

Sobell, Mark G. A Practical Guide to the UNIX System. 3rd ed. Reading, MA: Addison-Wesley, 1995.

Citazione MLA

Sobell, Mark G. A Practical Guide to the UNIX System. 3rd ed. Addison-Wesley, 1995.