Black, U. (1997). ISDN & SS7: Architectures for digital signaling networks. Prentice-Hall PTR.
Cita Chicago (17th ed.)Black, Uyless. ISDN & SS7: Architectures for Digital Signaling Networks. Upper Saddle River, N.J: Prentice-Hall PTR, 1997.
Cita MLA (9th ed.)Black, Uyless. ISDN & SS7: Architectures for Digital Signaling Networks. Prentice-Hall PTR, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.