Cita APA (7a ed.)

Shirky, C., & Foley, K. (2010). Cognitive surplus (Unabridged.). Tantor Media.

Cita Chicago Style (17a ed.)

Shirky, Clay, y Kevin Foley. Cognitive Surplus. Unabridged. [Old Saybrook, Conn.]: Tantor Media, 2010.

Cita MLA (9a ed.)

Shirky, Clay, y Kevin Foley. Cognitive Surplus. Unabridged. Tantor Media, 2010.