Cita APA (7th ed.)

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.