Raustiala, K., & Sprigman, C. J. (2012). The knockoff economy: How imitation spurs innovation. Oxford University Press, USA.

Raustiala, Kal, and Christopher Jon Sprigman. The Knockoff Economy: How Imitation Spurs Innovation. Oxford [UK] ; New York: Oxford University Press, USA, 2012.

Raustiala, Kal, and Christopher Jon Sprigman. The Knockoff Economy: How Imitation Spurs Innovation. Oxford University Press, USA, 2012.