Cita APA (7th ed.)
Held, G. (2004). Virtual private networking: A construction, operation and utilization guide. John Wiley.
Cita Chicago (17th ed.)
Held, Gilbert. Virtual Private Networking: A Construction, Operation and Utilization Guide. Chichester: John Wiley, 2004.
Cita MLA (9th ed.)
Held, Gilbert. Virtual Private Networking: A Construction, Operation and Utilization Guide. John Wiley, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.