|   | by Clay ShirkyPaperback details (UK). details (USA). details (Germany). details (Canada). ISBN: 978-0-14-104160-5 ISBN-10: 0-14-104160-9 Penguin · 2011 | 
| See also: | ||
| 2010 | Hardcover | Cognitive Surplus: Creativity and Generosity in a Connected Age | 
| 2010 | Hardcover | Cognitive Surplus: Creativity and Generosity in a Connected Age | 
| 2010 | MP3 CD | Cognitive Surplus: Creativity and Generosity in a Connected Age |