Citazione Stile APA (7a Edizione)

Newman, H. H., & Holzinger, K. J. (1937). Twins: A study of heredity and environment. University of Chicago Press.

Citazione stile Chigago Style (17a edizione)

Newman, Horatio Hackett, e Karl J. Holzinger. Twins: A Study of Heredity and Environment. Chicago, Illinois: University of Chicago Press, 1937.

Citatione MLA (9a ed.)

Newman, Horatio Hackett, e Karl J. Holzinger. Twins: A Study of Heredity and Environment. University of Chicago Press, 1937.