Abrahamsen, M. A., & Scroggs, C. L. (1957). Agricultural cooperation: Selected readings. University of Minnesota Press.
Cita Chicago (17th ed.)Abrahamsen, Martin Abraham, i Claud L. Scroggs. Agricultural Cooperation: Selected Readings. Minneapolis: University of Minnesota Press, 1957.
Cita MLA (9th ed.)Abrahamsen, Martin Abraham, i Claud L. Scroggs. Agricultural Cooperation: Selected Readings. University of Minnesota Press, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.