Não informado. (1965). Business Economics. National Association of Business Economists.
Chicago-Zitierstil (17. Ausg.)Não informado. Business Economics. Cleveland, Ohio: National Association of Business Economists, 1965.
MLA-Zitierstil (8. Ausg.)Não informado. Business Economics. National Association of Business Economists, 1965.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.