Aiyengar, N. K. N. (1964). Minerals of Madras: A comprehensive and up-to-date guide to the mineral occurrences in Madras State. Dept. of Industries and Commerce.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Aiyengar, Nagamangalam Kesava Narasimha. Minerals of Madras: A Comprehensive and Up-to-date Guide to the Mineral Occurrences in Madras State. Madras: Dept. of Industries and Commerce, 1964.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Aiyengar, Nagamangalam Kesava Narasimha. Minerals of Madras: A Comprehensive and Up-to-date Guide to the Mineral Occurrences in Madras State. Dept. of Industries and Commerce, 1964.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.