O'Gordon, G. (1968). Modern trends in mental health and subnormality. Butterworths.
Cita Chicago (17th ed.)O'Gordon, Gerald. Modern Trends in Mental Health and Subnormality. London: Butterworths, 1968.
Cita MLA (9th ed.)O'Gordon, Gerald. Modern Trends in Mental Health and Subnormality. Butterworths, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.