Lieb, H. (1888). The protective tariff what it does for US! (4th. ed. rev.). Belford, Clarke & Co..
Cita Chicago Style (17a ed.)Lieb, Hermann. The Protective Tariff What It Does for US! 4th. ed. rev. Chicago: Belford, Clarke & Co., 1888.
Cita MLA (8a ed.)Lieb, Hermann. The Protective Tariff What It Does for US! 4th. ed. rev. Belford, Clarke & Co., 1888.
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