Cita APA (7a ed.)

Krugman, P. R. (1994). Fluctuations, instability and agglomeration. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Krugman, Paul R. Fluctuations, Instability and Agglomeration. Cambridge, MA: National Bureau of Economic Research, 1994.

Cita MLA (9a ed.)

Krugman, Paul R. Fluctuations, Instability and Agglomeration. National Bureau of Economic Research, 1994.