1. (2)Joshua Bernhardt (1948 ) The Sugar Industry and the Federal Government. Washington.
2. (3)Bonnen, T. James, and Vernon Ruttan (1969 ) "The Crises in the Traditional Roles of Agricultural Institutions ," in), Agricultural Policy in an Affluent Society (New York), pp.48 -62 .
3. (4)Harold Breimyer, and Vernon Ruttan (1969 ) "The Three Economies of Agriculture ," in),Agricultural Policy in an Affluent Society(New York), pp.22 -47 .
4. (5)Bryant, W. Keith, and Vernon Ruttan (1969 ) "Rural Poverty ," in),Agricultural Policy in an Affluent Society(New York), pp.226 -234 .