Allen, A., & Worsley, P. (1971). Two blades of grass: Rural cooperatives in agricultural modernization. Manchester University Press.

Allen, Ann, and Peter Worsley. Two Blades of Grass: Rural Cooperatives in Agricultural Modernization. [Manchester, Eng.]: Manchester University Press, 1971.

Allen, Ann, and Peter Worsley. Two Blades of Grass: Rural Cooperatives in Agricultural Modernization. Manchester University Press, 1971.