1. Anonymous, Onion Consumption Per Capita in India. (2018a). https://www.helgilibrary.com/indicators/onion-consumption-per-capita/india/ Retrieved on 20 Aug 2018
2. Anonymous, Onion production Database-2019. Food and Agriculture Organization of the United Nations (2019a)
3. Anonymous, International trade statistics database of onion. United Nations Comtrade (2018b)
4. Anonymous, Horticultural statistics at a glance. Horticulture Statics Division, Department of Agriculture, Cooperation and Farmers Welfare, Ministry of Agriculture and Farmers Welfare, Government of India (2018c)
5. L.J. Clarke, Agricultural mechanization strategy formulation. Agricultural Engineering Branch, Agricultural Support Systems Division, FAO, Rome, Italy (1997)