1. 1. Shastri Ambikadutta, Sushrutasamhita-Sutra sthana, Chaukhambha Sanskrit Sansathan, Varanasi, Verse 24/2-6, 2002 edition
2. 2. Shastri Ambikadutta, Sushrutasamhita-Sharirsthana, Chaukhambha Sanskrit Sansathan, Varanasi, Verse 2/35, 2002 edition
3. 3. Birth Defects & Genetics: Birth Defects" Retrieved on 2007-05-30
4. 4. Dicke JM (1989). "Teratology: principles and prac- tice". Med. Clin. North Am.73 (3): 567–82.
5. 5. Shastri Kashinath, Tripathi Indradev, Tripathi Srikanta, AshtangHridayam-Sharirsthan, Krishnadas Academy, Varanasi, Verse 1/70-71, 1994 edition