Cita APA (7a ed.)

Cook, P. J., Braga, A. A., Venkatesh, S. A., & Ludwig, J. (2005). Underground Gun Markets. National Bureau of Economic Research. https://doi.org/10.3386/w11737

Cita Chicago Style (17a ed.)

Cook, Philip J., Anthony Allan Braga, Sudhir A. Venkatesh, y Jens Ludwig. Underground Gun Markets. National Bureau of Economic Research, 2005. https://doi.org/10.3386/w11737.

Cita MLA (9a ed.)

Cook, Philip J., et al. Underground Gun Markets. National Bureau of Economic Research, 2005. https://doi.org/10.3386/w11737.