USA Bureau of Foreign and Domestic Commerce. Economic series. US Government Print. Off.
Chicago-Zitierstil (17. Ausg.)USA Bureau of Foreign and Domestic Commerce. Economic Series. Washington: US Government Print. Off.
MLA-Zitierstil (9. Ausg.)USA Bureau of Foreign and Domestic Commerce. Economic Series. US Government Print. Off.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.