APA
Anderson C., . (2009). Free : the future of a radical price. Great Britain: Random house.
Chicago
Anderson Chris, . 2009. Free : the future of a radical price. Great Britain: Random house.
Harvard
Anderson C., . (2009). Free : the future of a radical price. Great Britain: Random house.
MLA
Anderson Chris, . Free : the future of a radical price. Great Britain: Random house. 2009.