Não informado. (1960). Main Economic Indicators. Department of Economics and Statistics.
Chicago-Zitierstil (17. Ausg.)Não informado. Main Economic Indicators. Paris: Department of Economics and Statistics, 1960.
MLA-Zitierstil (8. Ausg.)Não informado. Main Economic Indicators. Department of Economics and Statistics, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.