APA Citation

Johnston, & Piscitello. (2006). Understanding Voice over IP security. Boston, MA: Artech House.

Chicago Style Citation

Johnston, and Piscitello. Understanding Voice Over IP Security. Boston, MA: Artech House, 2006.

MLA Citation

Johnston, and Piscitello. Understanding Voice Over IP Security. Boston, MA: Artech House, 2006.

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