Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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