Kerala (India). Bureau of Economics and Statistics, Viswanatha Pillai, G., & Sreedevi, P. L. (1967). Evaluation of some major irrigation projects in Kerala. Printed by the S.G.P. at the Govt. Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kerala (India). Bureau of Economics and Statistics, G. Viswanatha Pillai, و P. L. Sreedevi. Evaluation of Some Major Irrigation Projects in Kerala. Trivandrum: Printed by the S.G.P. at the Govt. Press, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kerala (India). Bureau of Economics and Statistics, et al. Evaluation of Some Major Irrigation Projects in Kerala. Printed by the S.G.P. at the Govt. Press, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.