APA (7th ed.) Citation

DeLong, J. B. (2000). The shape of twentieth century economic history. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

DeLong, J. Bradford. The Shape of Twentieth Century Economic History. Cambridge: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

DeLong, J. Bradford. The Shape of Twentieth Century Economic History. National Bureau of Economic Research, 2000.