Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.