Cita APA (7a ed.)

Hopenhayn, H. A., & Mitchell, M. F. (1999). Innovation fertility and patent design. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Hopenhayn, Hugo Andrés, y Matthew F. Mitchell. Innovation Fertility and Patent Design. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Hopenhayn, Hugo Andrés, y Matthew F. Mitchell. Innovation Fertility and Patent Design. National Bureau of Economic Research, 1999.