Ronald Stanley Illingworth

title	ISBN-13	year of publication
Common Symptons of Disease in Children,	978-0-397-60340-4	1976
Normal Child: Some Problems of the Early Years and Their Treatment	978-0-443-04455-7	1991
The Development of the Infant and Young Child: Normal and Abnormal	978-0-443-03840-2	1987
Your Child's Development in the First Five Years	978-0-443-02237-1	1981