Wayland, F. (1862). The elements of political economy ([4th ed.?].). Gould and Lincoln.
Lua i Stíl Chicago (17ú heag.)Wayland, Francis. The Elements of Political Economy. [4th ed.?]. Boston: Gould and Lincoln, 1862.
Lua MLA (8ú heag.)Wayland, Francis. The Elements of Political Economy. [4th ed.?]. Gould and Lincoln, 1862.
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