Cita APA (7th ed.)
Eckert, J. W., & Schitka, M. J. Guide to UNIX System Administration. Course Technology.
Cita Chicago (17th ed.)
Eckert, Jason W., i M. John Schitka. Guide to UNIX System Administration. Boston, EUA: Course Technology.
Cita MLA (9th ed.)
Eckert, Jason W., i M. John Schitka. Guide to UNIX System Administration. Course Technology.
Atenció: Aquestes cites poden no estar 100% correctes.