1. Constituent Assembly Debates Vol. XI P 975
2. Dr. D.D. Basu, Constitutional Law of India, Sixth Edition. Publisher- Prentice-Hall of India Private Ltd. New Delhi. 1991 Pg. No. 420 .
3. P.V. Rajmannar on Centre States Relations, Madras 1971
4. Constituent Assembly Debates Vol. –VII.
5. The Supreme Court in its earlier decision in Shankari Prasad Vs. Union of India (1952) SCR 89, and Saggan Singh V. State of Rajasthan, A 1965 SC 845, held that Art, 13(2) and Art 368 and mutually exclusive.
6. Minerva Mills Vs. Union of India A 1980 SC. 1789.