Cita APA (7a ed.)

Berndt, E. R., Pindyck, R. S., & Azoulay, P. (2000). Consumption externalities and diffusion in pharmaceutical markets: Antiulcer drugs. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Berndt, Ernst R., Robert S. Pindyck, y Pierre Azoulay. Consumption Externalities and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. Cambridge, MA: National Bureau of Economic Research, 2000.

Cita MLA (9a ed.)

Berndt, Ernst R., et al. Consumption Externalities and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. National Bureau of Economic Research, 2000.