Punjab (India). Economic and Statistical Organisation. (1973). Economics of tractor cultivation and economics of production and cultivation practices of high yielding varieties of wheat, maize (hybrid), and paddy in Punjab: Report. Economic and Statistical Organisation.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Punjab (India). Economic and Statistical Organisation. Economics of Tractor Cultivation and Economics of Production and Cultivation Practices of High Yielding Varieties of Wheat, Maize (hybrid), and Paddy in Punjab: Report. Chandigarh: Economic and Statistical Organisation, 1973.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Punjab (India). Economic and Statistical Organisation. Economics of Tractor Cultivation and Economics of Production and Cultivation Practices of High Yielding Varieties of Wheat, Maize (hybrid), and Paddy in Punjab: Report. Economic and Statistical Organisation, 1973.