Heilbroner, R. L. (1960). The future as history: The historic currents of our time and the direction in which they are taking America. Harper & Row.
Chicago-Zitierstil (17. Ausg.)Heilbroner, Robert L. The Future as History: The Historic Currents of Our Time and the Direction in Which They Are Taking America. New York, NY: Harper & Row, 1960.
MLA-Zitierstil (9. Ausg.)Heilbroner, Robert L. The Future as History: The Historic Currents of Our Time and the Direction in Which They Are Taking America. Harper & Row, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.