APA aipamena

HELD, G. (2004). Virtual private networking. John Wiley & Sons.

Chicago Style aipamena

HELD, Gilbert. Virtual Private Networking. John Wiley & Sons, 2004.

MLA aipamena

HELD, Gilbert. Virtual Private Networking. John Wiley & Sons, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.