MLA

Illingworth, Ronald S. The Development of the Infant and Young Child : Normal and Abnormal. 2nd ed. Edinburgh: E. & S. Livingstone, 1963.

APA

Illingworth, R. S. (1963). The development of the infant and young child : normal and abnormal. 2nd ed. Edinburgh: E. & S. Livingstone.

Chicago

Illingworth, Ronald S. The Development of the Infant and Young Child: Normal and Abnormal. 2nd ed. Edinburgh: E. & S. Livingstone, 1963.