Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Barnes, Richard, e Karl Heinz Wolf. VoIP Emergency Calling: Foundations and Practice. Hoboken, NJ: Wiley, 2011.

Citatione MLA (9a ed.)

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