Cita APA (7th ed.)

Freer, J. R. (1996). Computer communications and networks (2nd ed.). UCL Press.

Cita Chicago (17th ed.)

Freer, John R. Computer Communications and Networks. 2nd ed. London: UCL Press, 1996.

Cita MLA (9th ed.)

Freer, John R. Computer Communications and Networks. 2nd ed. UCL Press, 1996.