Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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