APA Citation

Wallingford, T. (2005). Switching to VOIP. US: O'Reilly Media, United.

Chicago Style Citation

Wallingford, Ted. Switching to VOIP. US: O'Reilly Media, United, 2005.

MLA Citation

Wallingford, Ted. Switching to VOIP. US: O'Reilly Media, United, 2005.

Warning: These citations may not always be 100% accurate.