Cita APA (7a ed.)

Jones, C. I., & Williams, J. C. (1999). Too much of a good thing?: The economics of investment in R&D. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Jones, Charles Irving, y John Carroll Williams. Too Much of a Good Thing?: The Economics of Investment in R&D. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Jones, Charles Irving, y John Carroll Williams. Too Much of a Good Thing?: The Economics of Investment in R&D. National Bureau of Economic Research, 1999.