Personality differences and biological variations: a study of twins,
by Gordon Claridge, Sandra Canter, and W. I. Hume.
APA Citation
Claridge, G., Hume, W. I. (Wilfrid I.)., Canter, S. (1973). Personality differences and biological variations: a study of twins. [1st ed.] Oxford: Pergamon Press.
MLA Citation
Claridge, Gordon, W. I. (Wilfrid I.) Hume, and Sandra Canter. Personality Differences And Biological Variations: a Study of Twins. [1st ed.] Oxford: Pergamon Press, 1973.
Warning: These citations may not always be complete (especially for serials).