Kurien, Verghese (2007). "India' s Milk Revolution: Investing in Rural Producer Organizations". Dalam Narayan, Deepa; Glinskaya, Elena. Ending Poverty in South Asia: Ideas that work. Washington D.C., USA: (The World Bank). hlm. 52. ISBN0-8213-6876-1. Diakses tanggal 11 September 2012.