Stern, S. (1999). Do scientists pay to be scientists? National Bureau of Economic Research.
Cita Chicago Style (17a ed.)Stern, Scott. Do Scientists Pay to Be Scientists? Cambridge, MA: National Bureau of Economic Research, 1999.
Cita MLA (9a ed.)Stern, Scott. Do Scientists Pay to Be Scientists? National Bureau of Economic Research, 1999.
Precaución: Estas citas no son 100% exactas.