APA (7th ed.) Citation

Barnes, R., & Wolf, K. H. (2011). VoIP emergency calling: Foundations and practice. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Barnes, Richard, and Karl Heinz Wolf. VoIP Emergency Calling: Foundations and Practice. Chichester, West Sussex, U.K: John Wiley & Sons, 2011.

MLA (9th ed.) Citation

Barnes, Richard, and Karl Heinz Wolf. VoIP Emergency Calling: Foundations and Practice. John Wiley & Sons, 2011.