Não informado. (1957). Business Horizons. Indiana University, School of Business.
Chicago-Zitierstil (17. Ausg.)Não informado. Business Horizons. Bloomington, Ind: Indiana University, School of Business, 1957.
MLA-Zitierstil (8. Ausg.)Não informado. Business Horizons. Indiana University, School of Business, 1957.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.