Raper, C. L. (1906). The principles of wealth and welfare: Economics for high schools. The Macmillan Company.
Chicago-Zitierstil (17. Ausg.)Raper, Charles Lee.. The Principles of Wealth and Welfare: Economics for High Schools. New York: The Macmillan Company, 1906.
MLA-Zitierstil (9. Ausg.)Raper, Charles Lee.. The Principles of Wealth and Welfare: Economics for High Schools. The Macmillan Company, 1906.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.