Cita APA (7a ed.)

David, P. A., Hall, B. H., & Toole, A. A. (1999). Is public R&D a complement or substitute for private R&D?: A review of the econometric evidence. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

David, Paul A., Bronwyn H. Hall, y Andrew A. Toole. Is Public R&D a Complement or Substitute for Private R&D?: A Review of the Econometric Evidence. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

David, Paul A., et al. Is Public R&D a Complement or Substitute for Private R&D?: A Review of the Econometric Evidence. National Bureau of Economic Research, 1999.