Lua APA (7ú heag.)

Bellamy, J. (2000). Digital telephony (3rd ed.). Wiley India.

Lua i Stíl Chicago (17ú heag.)

Bellamy, John. Digital Telephony. 3rd ed. New York ; New Delhi: Wiley India, 2000.

Lua MLA (8ú heag.)

Bellamy, John. Digital Telephony. 3rd ed. Wiley India, 2000.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.