APA
Berry S., National Bureau of Economic Research, Eizenberg A. & Waldfogel J. (2015). Optimal product variety in radio markets. Cambridge: NBER.
Chicago
Berry Steven, National Bureau of Economic Research, Eizenberg Alon and Waldfogel Joel. 2015. Optimal product variety in radio markets. Cambridge: NBER.
Harvard
Berry S., National Bureau of Economic Research, Eizenberg A. and Waldfogel J. (2015). Optimal product variety in radio markets. Cambridge: NBER.
MLA
Berry Steven, National Bureau of Economic Research, Eizenberg Alon and Waldfogel Joel. Optimal product variety in radio markets. Cambridge: NBER. 2015.