APA-viite (7. p.)

Held, G. (1994). Understanding data communications (4th ed.). Sams Pub.

Chicago-viite (17. p.)

Held, Gilbert. Understanding Data Communications. 4th ed. Carmel, Ind: Sams Pub, 1994.

MLA-viite (9. p.)

Held, Gilbert. Understanding Data Communications. 4th ed. Sams Pub, 1994.