Cita APA (7a ed.)

Ingalls, R. P. (1978). Mental retardation: The changing outlook. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Ingalls, Robert P. Mental Retardation: The Changing Outlook. New York [etc.]: John Wiley & Sons, 1978.

Cita MLA (9a ed.)

Ingalls, Robert P. Mental Retardation: The Changing Outlook. John Wiley & Sons, 1978.