APA (7th ed.) Citation

Allen, R. M., & Cortazzo, A. D. (1970). Psychosocial and educational aspects and problems of mental retardation. Thomas.

Chicago Style (17th ed.) Citation

Allen, Robert M., and Arnold D. Cortazzo. Psychosocial and Educational Aspects and Problems of Mental Retardation. Springfield, Ill: Thomas, 1970.

MLA (9th ed.) Citation

Allen, Robert M., and Arnold D. Cortazzo. Psychosocial and Educational Aspects and Problems of Mental Retardation. Thomas, 1970.