1. CONGENITAL CYSTIC DISEASE OP THE LUNG
2. J.M. Kissane(1975 ) Pathology of Infancy and Childhood , pp.477 -481 . C.V. Mosby, St Louis.
3. W.T. Koos, and M.H. Miller(1971 ) Intracranial Tumours of Infancy and Childhood , pp.213 -220 . C.V. Mosby, St Louis.