1. R. Dawber, and A. Rook(1982 ) Diseases of the Hair and Scalp , pp.50 -54 , Blackwell Scientific Publications, Oxford.
2. Leukoedema of the oral mucosa. Possibly an acquired white sponge nevus
3. H. E. Evans, and L. Glass(1976 ) Perinatal Medicine , p.32 , Harper & Row, New York.
4. T. Heyl, E. J. Raubenheimer, and J. P. Roux, Sucking pads in neonates . Submitted for publication.
5. R. S. Illingworth(1979 ) The Normal Child , 7th edition pp.80 -82 . Churchill Livingstone, New York.