Citação norma APA

Kortum, S., & Lerner, J. (1997). Stronger protection or technological revolution: What is behind the recent surge in patentingn. National Bureau of Economic Research.

Citação norma Chicago

Kortum, Samuel, and Josh Lerner. Stronger Protection or Technological Revolution: What Is Behind the Recent Surge in Patentingn. Cambridge: National Bureau of Economic Research, 1997.

Citação norma MLA

Kortum, Samuel, and Josh Lerner. Stronger Protection or Technological Revolution: What Is Behind the Recent Surge in Patentingn. National Bureau of Economic Research, 1997.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.