APA (7th ed.) Citation

(1985). Mental deficiency: The changing outlook (4. ed.). Methuen.

Chicago Style (17th ed.) Citation

Mental Deficiency: The Changing Outlook. 4. ed. London: Methuen, 1985.

MLA (9th ed.) Citation

Mental Deficiency: The Changing Outlook. 4. ed. Methuen, 1985.