APA引文

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

芝加哥风格引文

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

MLA引文

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

警告：这些引文格式不一定是100％准确.