Berry, S., & Waldfogel, J. (1996). Free entry and social inefficiency in radio broadcasting. National Bureau of Economic Research.
芝加哥风格引文Berry, Steven, 与 Joel Waldfogel. Free Entry and Social Inefficiency in Radio Broadcasting. Cambridge: National Bureau of Economic Research, 1996.
MLA引文Berry, Steven, 与 Joel Waldfogel. Free Entry and Social Inefficiency in Radio Broadcasting. National Bureau of Economic Research, 1996.
警告：这些引文格式不一定是100％准确.