Cita APA (7a ed.)

Segal, N. L. (1999). Entwined lives: Twins and what they tell us about human behavior. Dutton.

Cita Chicago Style (17a ed.)

Segal, Nancy L. Entwined Lives: Twins and What They Tell Us About Human Behavior. New York [u.a.]: Dutton, 1999.

Cita MLA (9a ed.)

Segal, Nancy L. Entwined Lives: Twins and What They Tell Us About Human Behavior. Dutton, 1999.