Stallings, W. (1999). ISDN and broadband ISDN with frame relay and ATM (4th ed.). Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Stallings, William. ISDN and Broadband ISDN with Frame Relay and ATM. 4th ed. Upper Saddle River, N.J. ; New Delhi: Pearson/Prentice Hall, 1999.
Lua MLA (8ú heag.)Stallings, William. ISDN and Broadband ISDN with Frame Relay and ATM. 4th ed. Pearson/Prentice Hall, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.