George, H. (1938). Protection or free trade: An examination of the tariff question, with especial regard to the interests of labor. Robert Schalkenbach Foundation.
Chicago-Zitierstil (17. Ausg.)George, Henry. Protection or Free Trade: An Examination of the Tariff Question, with Especial Regard to the Interests of Labor. New York: Robert Schalkenbach Foundation, 1938.
MLA-Zitierstil (9. Ausg.)George, Henry. Protection or Free Trade: An Examination of the Tariff Question, with Especial Regard to the Interests of Labor. Robert Schalkenbach Foundation, 1938.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.