APA
Dumais G., Glaeser Edward L, Ellison Glenn & National Bureau Of Economic Research. (1997). Geographic concentration as a dynamic pfocess. Cambridge, MA: NBER.
Chicago
Dumais Guy, Glaeser Edward L, Ellison Glenn and National Bureau Of Economic Research. 1997. Geographic concentration as a dynamic pfocess. Cambridge, MA: NBER.
Harvard
Dumais G., Glaeser Edward L, Ellison Glenn and National Bureau Of Economic Research. (1997). Geographic concentration as a dynamic pfocess. Cambridge, MA: NBER.
MLA
Dumais Guy, Glaeser Edward L, Ellison Glenn and National Bureau Of Economic Research. Geographic concentration as a dynamic pfocess. Cambridge, MA: NBER. 1997.