O'Gordon, G. (1968). Modern trends in mental health and subnormality. Butterworths.
芝加哥风格引文O'Gordon, Gerald. Modern Trends in Mental Health and Subnormality. London: Butterworths, 1968.
MLA引文O'Gordon, Gerald. Modern Trends in Mental Health and Subnormality. Butterworths, 1968.
警告：这些引文格式不一定是100％准确.