Cita APA (7a ed.)

Max, H. A., & Ray, T. C. (2006). Skype: The Definitive Guide (1st edition.). Addison Wesley Professional.

Cita Chicago Style (17a ed.)

Max, Harry Author, y Taylor Contributor Ray. Skype: The Definitive Guide. 1st edition. [Place of publication not identified]: Addison Wesley Professional, 2006.

Cita MLA (9a ed.)

Max, Harry Author, y Taylor Contributor Ray. Skype: The Definitive Guide. 1st edition. Addison Wesley Professional, 2006.