Codex, 7. M. (1992). The basics book of X.25 packet switching. Reading, Mass : Addison-Wesley.
Dyfyniad Arddull ChicagoCodex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
Dyfyniad MLACodex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.