Cita APA (7a ed.)

Claridge, G., Canter, S., Hume, W. I., Claridge, G. S., & Hume, W. I. (1973). Personality differences and biological variations: A study of twins International series of monographs on experimental psychology.

Cita Chicago Style (17a ed.)

Claridge, Gordon, Sandra Canter, Wilfrid I. Hume, Gordon S. Claridge, y Wilfred I. Hume. "Personality Differences and Biological Variations: A Study of Twins." International Series of Monographs on Experimental Psychology 1973.

Cita MLA (8a ed.)

Claridge, Gordon, et al. "Personality Differences and Biological Variations: A Study of Twins." International Series of Monographs on Experimental Psychology, 1973.