Dumais, G., Ellison, G., & Glaeser, E. L. (1997). Geographic concentration as a dynamic process. National Bureau of Economics and Research.
芝加哥风格引文Dumais, Guy, Glenn Ellison, 与 Edward L. Glaeser. Geographic Concentration as a Dynamic Process. Cambridge: National Bureau of Economics and Research, 1997.
MLA引文Dumais, Guy, et al. Geographic Concentration as a Dynamic Process. National Bureau of Economics and Research, 1997.
警告：这些引文格式不一定是100％准确.