Thomas P. Govan, "Agrarian and Agrarianism: A Study in the Use and Abuse of Words," Journal of Southern History, Vol. 30#1 (Feb., 1964), pp. 35-47 in JSTOR (em inglês)
Paul H. Johnstone, "Turnips and Romanticism," Agricultural History , Vol. 12, No. 3 (Jul., 1938), pp. 224-255 in JSTOR (em inglês)