Cita APA (7a ed.)

Joseph, P., & Tarpley, W. G. (2007). Zeitgeist. Distributed by Progressive Press.

Cita Chicago Style (17a ed.)

Joseph, Peter, y Webster Griffin Tarpley. Zeitgeist. [Joshua Tree, CA]: Distributed by Progressive Press, 2007.

Cita MLA (9a ed.)

Joseph, Peter, y Webster Griffin Tarpley. Zeitgeist. Distributed by Progressive Press, 2007.