Cita APA (7a ed.)

Lerner, J. (2002). Patent protection and innovation over 150 years. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Lerner, Joshua. Patent Protection and Innovation over 150 Years. Cambridge, MA: National Bureau of Economic Research, 2002.

Cita MLA (9a ed.)

Lerner, Joshua. Patent Protection and Innovation over 150 Years. National Bureau of Economic Research, 2002.