APA aipamena

Swale, R., & Collins, D. (2014). Carrier-grade VoIP (Third edition.). McGraw-Hill.

Chicago Style aipamena

Swale, Richard, and Daniel Collins. Carrier-grade VoIP. Third edition. New York: McGraw-Hill, 2014.

MLA aipamena

Swale, Richard, and Daniel Collins. Carrier-grade VoIP. Third edition. McGraw-Hill, 2014.