Narayana, D. L. (1974). Studies in the economics of farm management in Cuddapah District, Andhra Pradesh: Combined report for the period 1967-68 to 1969-70. Directorate of Economics and Statistics, Ministry of Agriculture, Govt. of India.
Παραπομπή σε μορφή Chicago (17η εκδ.)Narayana, D. L. Studies in the Economics of Farm Management in Cuddapah District, Andhra Pradesh: Combined Report for the Period 1967-68 to 1969-70. [New Delhi]: Directorate of Economics and Statistics, Ministry of Agriculture, Govt. of India, 1974.
Παραπομπή σε μορφή MLA (8th εκδ.)Narayana, D. L. Studies in the Economics of Farm Management in Cuddapah District, Andhra Pradesh: Combined Report for the Period 1967-68 to 1969-70. Directorate of Economics and Statistics, Ministry of Agriculture, Govt. of India, 1974.