APA (7th ed.) Citation

Black, U. D. (2002). Voice over IP (2nd ed.). Prentice Hall PTR.

Chicago Style (17th ed.) Citation

Black, Uyless D. Voice over IP. 2nd ed. Upper Saddle River, N.J.: Prentice Hall PTR, 2002.

MLA (9th ed.) Citation

Black, Uyless D. Voice over IP. 2nd ed. Prentice Hall PTR, 2002.