Berndt, E. R., Pindyck, R. S., & Azoulay, P. (1999). Network effects and diffusion in pharmaceutical markets: Antiulcer drugs. National Bureau of Economic Research.
Citação do estilo Chicago (17ª ed.)Berndt, Ernst R., Robert S. Pindyck, e Pierre Azoulay. Network Effects and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. Cambridge: National Bureau of Economic Research, 1999.
Citação MLA (9ª ed.)Berndt, Ernst R., et al. Network Effects and Diffusion in Pharmaceutical Markets: Antiulcer Drugs. National Bureau of Economic Research, 1999.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.