Stallings, W. (1999). ISDN and broadband ISDN with frame relay and ATM (4th ed.). Pearson/Prentice Hall.
Chicago-viite (17. p.)Stallings, William. ISDN and Broadband ISDN with Frame Relay and ATM. 4th ed. Upper Saddle River, N.J. ; New Delhi: Pearson/Prentice Hall, 1999.
MLA-viite (8. p.)Stallings, William. ISDN and Broadband ISDN with Frame Relay and ATM. 4th ed. Pearson/Prentice Hall, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.