Saxena, B. C., Singh, H. P., & Verma, S. P. (1980). Statistical studies on milk production, income and employment under different categories of agricultural holdings in the milk shed area of Greater Calcutta Milk Supply Scheme, Calcutta - West Bengal (1976-77). Indian Agricultural Statistics Research Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Saxena, B. C., H. P. Singh, و S. P. Verma. Statistical Studies on Milk Production, Income and Employment Under Different Categories of Agricultural Holdings in the Milk Shed Area of Greater Calcutta Milk Supply Scheme, Calcutta - West Bengal (1976-77). New Delhi: Indian Agricultural Statistics Research Institute, 1980.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Saxena, B. C., et al. Statistical Studies on Milk Production, Income and Employment Under Different Categories of Agricultural Holdings in the Milk Shed Area of Greater Calcutta Milk Supply Scheme, Calcutta - West Bengal (1976-77). Indian Agricultural Statistics Research Institute, 1980.