APA সাইটেশন

Illingworth, R. S. (1968). The Normal Child: Some Problems of the First Five Years and their Treament. London: J. and A. Churchill.

শিকাগো স্টাইলে সাইটেশন

Illingworth, Ronald S. The Normal Child: Some Problems of the First Five Years and Their Treament. London: J. and A. Churchill, 1968.

এমএলএ সাইটেশন

Illingworth, Ronald S. The Normal Child: Some Problems of the First Five Years and Their Treament. London: J. and A. Churchill, 1968.