Gaya APA

Dryburgh, L., Jeff, I, H. (2005). Signaling system No.7 (SS7/C7): protocol, architecture, and services . Indianapolis: Indianapolis: Cisco, 2005.

Gaya MLA

Dryburgh, Lee., Jeff, I., Hewett,. "Signaling system No.7 (SS7/C7): protocol, architecture, and services". Indianapolis: Indianapolis: Cisco, 2005, 2005. Text.