Citazione APA

Frank, A. G. E., & Gills, B. K. E. (1996). The World system: Five hundred years or five thousand.

Stile di citazione Chicago

Frank, Andre Gunder; Ed, e Barry K; Ed Gills. The World System: Five Hundred Years or Five Thousand. London, Routledge, 1996.

Citazione MLA

Frank, Andre Gunder; Ed, e Barry K; Ed Gills. The World System: Five Hundred Years or Five Thousand. 1996.