National Bureau of Economic Research. General series / National Bureau of Economic Research, Inc. United States Gov. Pr. Off.
Chicago-Zitierstil (17. Ausg.)National Bureau of Economic Research. General Series / National Bureau of Economic Research, Inc. Washington, DC: United States Gov. Pr. Off.
MLA-Zitierstil (9. Ausg.)National Bureau of Economic Research. General Series / National Bureau of Economic Research, Inc. United States Gov. Pr. Off.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.