Gaya APA

Swanson, C, P., Hardin, C, M. (1952). **The politics of agriculture soil conservation and the struggle for ì power in rural Amerika . Illinois: Illinois: The Free Press; 1952.

Gaya MLA

Swanson, Carl, P.., Hardin, Charles, M. "**The politics of agriculture soil conservation and the struggle for ì power in rural Amerika". Illinois: Illinois: The Free Press; 1952, 1952. Text.