Krishnaswamy Ayyar, M. (2023). Working plan for the Thadagam Valley and Bolampatty, Block III, Forests of the Palghat Forest Division, Madras Presidency, 1930 to 1939. The Superintendent Government Press, Kerala.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Krishnaswamy Ayyar, M.H. Working Plan for the Thadagam Valley and Bolampatty, Block III, Forests of the Palghat Forest Division, Madras Presidency, 1930 to 1939. The Superintendent Government Press, Kerala, 2023.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Krishnaswamy Ayyar, M.H. Working Plan for the Thadagam Valley and Bolampatty, Block III, Forests of the Palghat Forest Division, Madras Presidency, 1930 to 1939. The Superintendent Government Press, Kerala, 2023.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.