Codex, 7. M. (1992). The basics book of X.25 packet switching. Reading, Mass : Addison-Wesley.
Čikaški stil citiranja (17. izdanje)Codex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
MLA način citiranja (9. izdanje)Codex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
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