Wolff, H. W. (1914). Co-operation in agriculture (2nd impression.). P.S. King & Son.
Cita Chicago Style (17a ed.)Wolff, Henry William. Co-operation in Agriculture. 2nd impression. London: P.S. King & Son, 1914.
Cita MLA (9a ed.)Wolff, Henry William. Co-operation in Agriculture. 2nd impression. P.S. King & Son, 1914.
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