Cita APA (7a ed.)

Matzan, J. (2007). The OpenBSD 4.0 crash course. O'Reilly.

Cita Chicago Style (17a ed.)

Matzan, Jem. The OpenBSD 4.0 Crash Course. Sebastopol, Calif.: O'Reilly, 2007.

Cita MLA (8a ed.)

Matzan, Jem. The OpenBSD 4.0 Crash Course. O'Reilly, 2007.