Ruff, H. J. (1979). How to prosper during the coming bad years. Times Books.
Chicago-Zitierstil (17. Ausg.)Ruff, Howard J. How to Prosper During the Coming Bad Years. New York: Times Books, 1979.
MLA-Zitierstil (9. Ausg.)Ruff, Howard J. How to Prosper During the Coming Bad Years. Times Books, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.