Codex, 7. M. (1992). The basics book of X.25 packet switching. Reading, Mass : Addison-Wesley.
芝加哥风格引文Codex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
MLA引文Codex, 7341 Motorola. The Basics Book of X.25 Packet Switching. Reading, Mass : Addison-Wesley, 1992.
警告：这些引文格式不一定是100％准确.