एपीए उद्धरण

Black, U. (1997). ISDN and SS7: Architecture for digital signaling networks. Upper Saddle River, NJ: Prentice-Hall.

शिकागो स्टाइल उद्धरण

Black, Uyless. ISDN and SS7: Architecture for Digital Signaling Networks. Upper Saddle River, NJ: Prentice-Hall, 1997.

एमएलए उद्धरण

Black, Uyless. ISDN and SS7: Architecture for Digital Signaling Networks. Upper Saddle River, NJ: Prentice-Hall, 1997.