Cita APA

Gentle Machine Productions (Firma), & Joseph, P. (2011). Zeitgeist: Moving forward. [S.l.]: Gentle Machine Productions.

Citación estilo Chicago

Gentle Machine Productions (Firma), y Peter Joseph. Zeitgeist: Moving Forward. [S.l.]: Gentle Machine Productions, 2011.

Cita MLA

Gentle Machine Productions (Firma), y Peter Joseph. Zeitgeist: Moving Forward. [S.l.]: Gentle Machine Productions, 2011.