Cita APA (7a ed.)

Berndt, E. R., & Pindyck, R. S. (1999). Network effects and diffusion in pharmaceutical markets: Antiulcer drugs. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Berndt, Ernst R., y Robert S. Pindyck. Network Effects and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Berndt, Ernst R., y Robert S. Pindyck. Network Effects and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. National Bureau of Economic Research, 1999.