APA (7th ed.) Citation

Motorola Codex. (1992). The Basics book of X.25 packet switching (2nd ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Motorola Codex. The Basics Book of X.25 Packet Switching. 2nd ed. Reading, Mass.: Addison-Wesley, 1992.

MLA (9th ed.) Citation

Motorola Codex. The Basics Book of X.25 Packet Switching. 2nd ed. Addison-Wesley, 1992.