Cita APA (7th ed.)

Held, G. (1992). Data communications networking devices. John Wiley.

Cita Chicago (17th ed.)

Held, Gilbert. Data Communications Networking Devices. Chichester: John Wiley, 1992.

Cita MLA (9th ed.)

Held, Gilbert. Data Communications Networking Devices. John Wiley, 1992.