Garver, F. B., & Hansen, A. H. (1947). Principles of economics (3rd ed.). Ginn.
Lua i Stíl Chicago (17ú heag.)Garver, Frederic Benjamin, agus Alvin Harvey Hansen. Principles of Economics. 3rd ed. Boston: Ginn, 1947.
Lua MLA (9ú heag.)Garver, Frederic Benjamin, agus Alvin Harvey Hansen. Principles of Economics. 3rd ed. Ginn, 1947.
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