Mussey, H. R., & Donnan, E. (1947). Economic principles and modern practice (2nd ed.). Ginn.
Lua i Stíl Chicago (17ú heag.)Mussey, Henry Raymond, agus Elizabeth Donnan. Economic Principles and Modern Practice. 2nd ed. Boston: Ginn, 1947.
Lua MLA (9ú heag.)Mussey, Henry Raymond, agus Elizabeth Donnan. Economic Principles and Modern Practice. 2nd ed. Ginn, 1947.
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